{ "dataset": "UK silver hallmark date letters", "version": "1.0-draft", "generated": "2026-10-10", "source_keys": { "CH": "Chaffers' Handbook to Hall Marks on Gold & Silver Plate, 1924 ed. (revised by C. A. Markham)", "JK": "Jackson, English Goldsmiths and Their Marks, 2nd ed. 1921 (Dover 1964 unaltered reprint scan)", "OFF": "UK assay offices' own published statements (see SOURCES.md)" }, "conventions": { "start_year": "Calendar year in which the letter came into use.", "end_year": "Present only when one letter was used for more than one assay year; it is the start year of the last assay year covered.", "year_label": "As printed by the source (e.g. 1760-1 = assay year beginning 1760).", "confidence": "high = both PD sources agree; medium = one source only, or letter form/case differs; low = sources disagree on year.", "alt": "The other source's reading where they disagree." }, "excluded": { "york": "Only one public-domain table (Jackson) with long gaps; could not cross-check.", "newcastle_1702_1790": "Chaffers and Jackson disagree on almost every year.", "chester_pre_1701_and_1751_1775": "Sources disagree on letters, case and years.", "dublin_pre_1821": "Sources disagree by one to two years throughout and Jackson shows irregular multi-year letters.", "all_1925_1974": "Not covered by any pre-1929 public-domain book; not extrapolated." }, "offices": [ { "office_id": "london", "name": "London (Goldsmiths' Hall)", "town_mark": "Leopard's head. Crowned from 1478 until the early 1820s, uncrowned afterwards (sources differ on the exact year: Jackson 1821-2, Goldsmiths' Company 1822, Chaffers 1823). On Britannia-standard silver (1697-1720) a lion's head erased replaced the leopard's head.", "years_active": "1478-present (dataset covers 1478-1924 plus the shared UK cycles from 1975)", "letter_changeover": "Late May each year (St Dunstan's day period), so each letter spans two calendar years, e.g. 1760-1. From 1975, 1 January.", "cycles": [ { "cycle_id": "LON-01", "start_year": 1478, "end_year": 1497, "label": "1478-9 to 1497-8", "letter_style": "Lombardic capitals", "shield_shape": null, "omitted_letters": "J, U (V used)", "notes": null, "entries": [ { "letter": "A", "year_label": "1478-9", "start_year": 1478, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "B", "year_label": "1479-80", "start_year": 1479, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "C", "year_label": "1480-1", "start_year": 1480, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "D", "year_label": "1481-2", "start_year": 1481, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "E", "year_label": "1482-3", "start_year": 1482, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "F", "year_label": "1483-4", "start_year": 1483, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "G", "year_label": "1484-5", "start_year": 1484, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "H", "year_label": "1485-6", "start_year": 1485, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "I", "year_label": "1486-7", "start_year": 1486, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "K", "year_label": "1487-8", "start_year": 1487, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "L", "year_label": "1488-9", "start_year": 1488, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "M", "year_label": "1489-90", "start_year": 1489, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "N", "year_label": "1490-1", "start_year": 1490, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "O", "year_label": "1491-2", "start_year": 1491, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "P", "year_label": "1492-3", "start_year": 1492, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Q", "year_label": "1493-4", "start_year": 1493, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "R", "year_label": "1494-5", "start_year": 1494, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "S", "year_label": "1495-6", "start_year": 1495, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "T", "year_label": "1496-7", "start_year": 1496, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "V", "year_label": "1497-8", "start_year": 1497, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "LON-02", "start_year": 1498, "end_year": 1517, "label": "1498-9 to 1517-8", "letter_style": "black letter (Old English) small", "shield_shape": null, "omitted_letters": "J, U (V used)", "notes": null, "entries": [ { "letter": "a", "year_label": "1498-9", "start_year": 1498, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "b", "year_label": "1499-00", "start_year": 1499, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "c", "year_label": "1500-1", "start_year": 1500, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "d", "year_label": "1501-2", "start_year": 1501, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "e", "year_label": "1502-3", "start_year": 1502, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "f", "year_label": "1503-4", "start_year": 1503, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "g", "year_label": "1504-5", "start_year": 1504, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "h", "year_label": "1505-6", "start_year": 1505, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "i", "year_label": "1506-7", "start_year": 1506, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "k", "year_label": "1507-8", "start_year": 1507, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "l", "year_label": "1508-9", "start_year": 1508, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "m", "year_label": "1509-10", "start_year": 1509, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "n", "year_label": "1510-1", "start_year": 1510, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "o", "year_label": "1511-2", "start_year": 1511, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "p", "year_label": "1512-3", "start_year": 1512, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "q", "year_label": "1513-4", "start_year": 1513, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "r", "year_label": "1514-5", "start_year": 1514, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "s", "year_label": "1515-6", "start_year": 1515, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "t", "year_label": "1516-7", "start_year": 1516, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "v", "year_label": "1517-8", "start_year": 1517, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "LON-03", "start_year": 1518, "end_year": 1537, "label": "1518-9 to 1537-8", "letter_style": "Lombardic capitals", "shield_shape": null, "omitted_letters": "J, U (V used)", "notes": null, "entries": [ { "letter": "A", "year_label": "1518-9", "start_year": 1518, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "B", "year_label": "1519-20", "start_year": 1519, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "C", "year_label": "1520-1", "start_year": 1520, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "D", "year_label": "1521-2", "start_year": 1521, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "E", "year_label": "1522-3", "start_year": 1522, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "F", "year_label": "1523-4", "start_year": 1523, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "G", "year_label": "1524-5", "start_year": 1524, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "H", "year_label": "1525-6", "start_year": 1525, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "I", "year_label": "1526-7", "start_year": 1526, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "K", "year_label": "1527-8", "start_year": 1527, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "L", "year_label": "1528-9", "start_year": 1528, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "M", "year_label": "1529-30", "start_year": 1529, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "N", "year_label": "1530-1", "start_year": 1530, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "O", "year_label": "1531-2", "start_year": 1531, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "P", "year_label": "1532-3", "start_year": 1532, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Q", "year_label": "1533-4", "start_year": 1533, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "R", "year_label": "1534-5", "start_year": 1534, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "S", "year_label": "1535-6", "start_year": 1535, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "T", "year_label": "1536-7", "start_year": 1536, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "V", "year_label": "1537-8", "start_year": 1537, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "LON-04", "start_year": 1538, "end_year": 1557, "label": "1538-9 to 1557-8", "letter_style": "Roman capitals", "shield_shape": null, "omitted_letters": "J, U (V used)", "notes": null, "entries": [ { "letter": "A", "year_label": "1538-9", "start_year": 1538, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "B", "year_label": "1539-40", "start_year": 1539, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "C", "year_label": "1540-1", "start_year": 1540, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "D", "year_label": "1541-2", "start_year": 1541, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "E", "year_label": "1542-3", "start_year": 1542, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "F", "year_label": "1543-4", "start_year": 1543, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "G", "year_label": "1544-5", "start_year": 1544, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "H", "year_label": "1545-6", "start_year": 1545, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "I", "year_label": "1546-7", "start_year": 1546, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "K", "year_label": "1547-8", "start_year": 1547, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "L", "year_label": "1548-9", "start_year": 1548, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "M", "year_label": "1549-50", "start_year": 1549, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "N", "year_label": "1550-1", "start_year": 1550, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "O", "year_label": "1551-2", "start_year": 1551, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "P", "year_label": "1552-3", "start_year": 1552, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Q", "year_label": "1553-4", "start_year": 1553, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "R", "year_label": "1554-5", "start_year": 1554, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "S", "year_label": "1555-6", "start_year": 1555, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "T", "year_label": "1556-7", "start_year": 1556, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "V", "year_label": "1557-8", "start_year": 1557, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "LON-05", "start_year": 1558, "end_year": 1577, "label": "1558-9 to 1577-8", "letter_style": "black letter small", "shield_shape": null, "omitted_letters": "J, U (V used)", "notes": null, "entries": [ { "letter": "a", "year_label": "1558-9", "start_year": 1558, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "b", "year_label": "1559-60", "start_year": 1559, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "c", "year_label": "1560-1", "start_year": 1560, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "d", "year_label": "1561-2", "start_year": 1561, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "e", "year_label": "1562-3", "start_year": 1562, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "f", "year_label": "1563-4", "start_year": 1563, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "g", "year_label": "1564-5", "start_year": 1564, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "h", "year_label": "1565-6", "start_year": 1565, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "i", "year_label": "1566-7", "start_year": 1566, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "k", "year_label": "1567-8", "start_year": 1567, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "l", "year_label": "1568-9", "start_year": 1568, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "m", "year_label": "1569-70", "start_year": 1569, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "n", "year_label": "1570-1", "start_year": 1570, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "o", "year_label": "1571-2", "start_year": 1571, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "p", "year_label": "1572-3", "start_year": 1572, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "q", "year_label": "1573-4", "start_year": 1573, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "r", "year_label": "1574-5", "start_year": 1574, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "s", "year_label": "1575-6", "start_year": 1575, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "t", "year_label": "1576-7", "start_year": 1576, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "v", "year_label": "1577-8", "start_year": 1577, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "LON-06", "start_year": 1578, "end_year": 1597, "label": "1578-9 to 1597-8", "letter_style": "Roman capitals", "shield_shape": null, "omitted_letters": "J, U (V used)", "notes": null, "entries": [ { "letter": "A", "year_label": "1578-9", "start_year": 1578, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "B", "year_label": "1579-80", "start_year": 1579, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "C", "year_label": "1580-1", "start_year": 1580, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "D", "year_label": "1581-2", "start_year": 1581, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "E", "year_label": "1582-3", "start_year": 1582, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "F", "year_label": "1583-4", "start_year": 1583, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "G", "year_label": "1584-5", "start_year": 1584, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "H", "year_label": "1585-6", "start_year": 1585, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "I", "year_label": "1586-7", "start_year": 1586, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "K", "year_label": "1587-8", "start_year": 1587, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "L", "year_label": "1588-9", "start_year": 1588, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "M", "year_label": "1589-90", "start_year": 1589, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "N", "year_label": "1590-1", "start_year": 1590, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "O", "year_label": "1591-2", "start_year": 1591, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "P", "year_label": "1592-3", "start_year": 1592, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Q", "year_label": "1593-4", "start_year": 1593, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "R", "year_label": "1594-5", "start_year": 1594, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "S", "year_label": "1595-6", "start_year": 1595, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "T", "year_label": "1596-7", "start_year": 1596, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "V", "year_label": "1597-8", "start_year": 1597, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "LON-07", "start_year": 1598, "end_year": 1617, "label": "1598-9 to 1617-8", "letter_style": "Lombardic capitals", "shield_shape": null, "omitted_letters": "J, U (V used)", "notes": null, "entries": [ { "letter": "A", "year_label": "1598-9", "start_year": 1598, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "B", "year_label": "1599-00", "start_year": 1599, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "C", "year_label": "1600-1", "start_year": 1600, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "D", "year_label": "1601-2", "start_year": 1601, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "E", "year_label": "1602-3", "start_year": 1602, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "F", "year_label": "1603-4", "start_year": 1603, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "G", "year_label": "1604-5", "start_year": 1604, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "H", "year_label": "1605-6", "start_year": 1605, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "I", "year_label": "1606-7", "start_year": 1606, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "K", "year_label": "1607-8", "start_year": 1607, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "L", "year_label": "1608-9", "start_year": 1608, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "M", "year_label": "1609-10", "start_year": 1609, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "N", "year_label": "1610-1", "start_year": 1610, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "O", "year_label": "1611-2", "start_year": 1611, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "P", "year_label": "1612-3", "start_year": 1612, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Q", "year_label": "1613-4", "start_year": 1613, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "R", "year_label": "1614-5", "start_year": 1614, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "S", "year_label": "1615-6", "start_year": 1615, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "T", "year_label": "1616-7", "start_year": 1616, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "V", "year_label": "1617-8", "start_year": 1617, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "LON-08", "start_year": 1618, "end_year": 1637, "label": "1618-9 to 1637-8", "letter_style": "small italic letters", "shield_shape": null, "omitted_letters": "J, U (V used)", "notes": null, "entries": [ { "letter": "a", "year_label": "1618-9", "start_year": 1618, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "b", "year_label": "1619-20", "start_year": 1619, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "c", "year_label": "1620-1", "start_year": 1620, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "d", "year_label": "1621-2", "start_year": 1621, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "e", "year_label": "1622-3", "start_year": 1622, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "f", "year_label": "1623-4", "start_year": 1623, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "g", "year_label": "1624-5", "start_year": 1624, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "h", "year_label": "1625-6", "start_year": 1625, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "i", "year_label": "1626-7", "start_year": 1626, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "k", "year_label": "1627-8", "start_year": 1627, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "l", "year_label": "1628-9", "start_year": 1628, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "m", "year_label": "1629-30", "start_year": 1629, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "n", "year_label": "1630-1", "start_year": 1630, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "o", "year_label": "1631-2", "start_year": 1631, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "p", "year_label": "1632-3", "start_year": 1632, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "q", "year_label": "1633-4", "start_year": 1633, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "r", "year_label": "1634-5", "start_year": 1634, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "s", "year_label": "1635-6", "start_year": 1635, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "t", "year_label": "1636-7", "start_year": 1636, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "v", "year_label": "1637-8", "start_year": 1637, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "LON-09", "start_year": 1638, "end_year": 1657, "label": "1638-9 to 1657-8", "letter_style": "court hand", "shield_shape": null, "omitted_letters": "J, U (V used)", "notes": null, "entries": [ { "letter": "a", "year_label": "1638-9", "start_year": 1638, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "b", "year_label": "1639-40", "start_year": 1639, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "c", "year_label": "1640-1", "start_year": 1640, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "d", "year_label": "1641-2", "start_year": 1641, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "e", "year_label": "1642-3", "start_year": 1642, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "f", "year_label": "1643-4", "start_year": 1643, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "g", "year_label": "1644-5", "start_year": 1644, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "h", "year_label": "1645-6", "start_year": 1645, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "i", "year_label": "1646-7", "start_year": 1646, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "k", "year_label": "1647-8", "start_year": 1647, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "l", "year_label": "1648-9", "start_year": 1648, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "m", "year_label": "1649-50", "start_year": 1649, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "n", "year_label": "1650-1", "start_year": 1650, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "o", "year_label": "1651-2", "start_year": 1651, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "p", "year_label": "1652-3", "start_year": 1652, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "q", "year_label": "1653-4", "start_year": 1653, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "r", "year_label": "1654-5", "start_year": 1654, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "s", "year_label": "1655-6", "start_year": 1655, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "t", "year_label": "1656-7", "start_year": 1656, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "v", "year_label": "1657-8", "start_year": 1657, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "LON-10", "start_year": 1658, "end_year": 1677, "label": "1658-9 to 1677-8", "letter_style": "black letter capitals", "shield_shape": null, "omitted_letters": "J, U (V used)", "notes": null, "entries": [ { "letter": "A", "year_label": "1658-9", "start_year": 1658, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "B", "year_label": "1659-60", "start_year": 1659, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "C", "year_label": "1660-1", "start_year": 1660, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "D", "year_label": "1661-2", "start_year": 1661, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "E", "year_label": "1662-3", "start_year": 1662, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "F", "year_label": "1663-4", "start_year": 1663, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "G", "year_label": "1664-5", "start_year": 1664, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "H", "year_label": "1665-6", "start_year": 1665, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "I", "year_label": "1666-7", "start_year": 1666, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "K", "year_label": "1667-8", "start_year": 1667, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "L", "year_label": "1668-9", "start_year": 1668, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "M", "year_label": "1669-70", "start_year": 1669, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "N", "year_label": "1670-1", "start_year": 1670, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "O", "year_label": "1671-2", "start_year": 1671, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "P", "year_label": "1672-3", "start_year": 1672, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Q", "year_label": "1673-4", "start_year": 1673, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "R", "year_label": "1674-5", "start_year": 1674, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "S", "year_label": "1675-6", "start_year": 1675, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "T", "year_label": "1676-7", "start_year": 1676, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "V", "year_label": "1677-8", "start_year": 1677, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "LON-11", "start_year": 1678, "end_year": 1696, "label": "1678-9 to 1696-7 (30 May 1696 to Mar 1697)", "letter_style": "black letter small", "shield_shape": null, "omitted_letters": "j; cycle stops at t", "notes": "Short cycle of 19 letters. The letter t ran from 30 May 1696 to March 1697, when the Britannia standard came in.", "entries": [ { "letter": "a", "year_label": "1678-9", "start_year": 1678, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "b", "year_label": "1679-80", "start_year": 1679, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "c", "year_label": "1680-1", "start_year": 1680, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "d", "year_label": "1681-2", "start_year": 1681, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "e", "year_label": "1682-3", "start_year": 1682, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "f", "year_label": "1683-4", "start_year": 1683, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "g", "year_label": "1684-5", "start_year": 1684, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "h", "year_label": "1685-6", "start_year": 1685, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "i", "year_label": "1686-7", "start_year": 1686, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "k", "year_label": "1687-8", "start_year": 1687, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "l", "year_label": "1688-9", "start_year": 1688, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "m", "year_label": "1689-90", "start_year": 1689, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "n", "year_label": "1690-1", "start_year": 1690, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "o", "year_label": "1691-2", "start_year": 1691, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "p", "year_label": "1692-3", "start_year": 1692, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "q", "year_label": "1693-4", "start_year": 1693, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "r", "year_label": "1694-5", "start_year": 1694, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "s", "year_label": "1695-6", "start_year": 1695, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "t", "year_label": "1696-7 (30 May 1696 to Mar 1697)", "start_year": 1696, "confidence": "high", "flags": [ "partial_year" ], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "LON-12", "start_year": 1697, "end_year": 1715, "label": "1697 (27 Mar to 29 May) to 1715-6", "letter_style": "court hand", "shield_shape": null, "omitted_letters": "j, u", "notes": "New cycle begun with the Britannia standard. Letter a was used only from 27 March to 29 May 1697; b starts the normal May-to-May year 1697-8.", "entries": [ { "letter": "a", "year_label": "1697 (27 Mar to 29 May)", "start_year": 1697, "confidence": "high", "flags": [ "partial_year" ], "sources": [ "CH", "JK" ] }, { "letter": "b", "year_label": "1697-8", "start_year": 1697, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "c", "year_label": "1698-9", "start_year": 1698, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "d", "year_label": "1699-00", "start_year": 1699, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "e", "year_label": "1700-1", "start_year": 1700, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "f", "year_label": "1701-2", "start_year": 1701, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "g", "year_label": "1702-3", "start_year": 1702, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "h", "year_label": "1703-4", "start_year": 1703, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "i", "year_label": "1704-5", "start_year": 1704, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "k", "year_label": "1705-6", "start_year": 1705, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "l", "year_label": "1706-7", "start_year": 1706, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "m", "year_label": "1707-8", "start_year": 1707, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "n", "year_label": "1708-9", "start_year": 1708, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "o", "year_label": "1709-10", "start_year": 1709, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "p", "year_label": "1710-1", "start_year": 1710, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "q", "year_label": "1711-2", "start_year": 1711, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "r", "year_label": "1712-3", "start_year": 1712, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "s", "year_label": "1713-4", "start_year": 1713, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "t", "year_label": "1714-5", "start_year": 1714, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "v", "year_label": "1715-6", "start_year": 1715, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "LON-13", "start_year": 1716, "end_year": 1735, "label": "1716-7 to 1735-6", "letter_style": "Roman capitals", "shield_shape": null, "omitted_letters": "J, U (V used)", "notes": null, "entries": [ { "letter": "A", "year_label": "1716-7", "start_year": 1716, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "B", "year_label": "1717-8", "start_year": 1717, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "C", "year_label": "1718-9", "start_year": 1718, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "D", "year_label": "1719-20", "start_year": 1719, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "E", "year_label": "1720-1", "start_year": 1720, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "F", "year_label": "1721-2", "start_year": 1721, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "G", "year_label": "1722-3", "start_year": 1722, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "H", "year_label": "1723-4", "start_year": 1723, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "I", "year_label": "1724-5", "start_year": 1724, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "K", "year_label": "1725-6", "start_year": 1725, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "L", "year_label": "1726-7", "start_year": 1726, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "M", "year_label": "1727-8", "start_year": 1727, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "N", "year_label": "1728-9", "start_year": 1728, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "O", "year_label": "1729-30", "start_year": 1729, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "P", "year_label": "1730-1", "start_year": 1730, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Q", "year_label": "1731-2", "start_year": 1731, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "R", "year_label": "1732-3", "start_year": 1732, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "S", "year_label": "1733-4", "start_year": 1733, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "T", "year_label": "1734-5", "start_year": 1734, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "V", "year_label": "1735-6", "start_year": 1735, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "LON-14", "start_year": 1736, "end_year": 1755, "label": "1736-7 to 1755-6", "letter_style": "Roman small", "shield_shape": null, "omitted_letters": "j, v (u used)", "notes": "Chaffers notes a change of shield outline in 1739. 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"confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "i", "year_label": "1744-5", "start_year": 1744, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "k", "year_label": "1745-6", "start_year": 1745, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "l", "year_label": "1746-7", "start_year": 1746, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "m", "year_label": "1747-8", "start_year": 1747, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "n", "year_label": "1748-9", "start_year": 1748, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "o", "year_label": "1749-50", "start_year": 1749, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "p", "year_label": "1750-1", "start_year": 1750, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "q", "year_label": "1751-2", "start_year": 1751, 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}, { "cycle_id": "LON-21", "start_year": 1876, "end_year": 1895, "label": "1876-7 to 1895-6", "letter_style": "Roman capitals", "shield_shape": null, "omitted_letters": "J, V", "notes": null, "entries": [ { "letter": "A", "year_label": "1876-7", "start_year": 1876, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "B", "year_label": "1877-8", "start_year": 1877, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "C", "year_label": "1878-9", "start_year": 1878, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "D", "year_label": "1879-80", "start_year": 1879, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "E", "year_label": "1880-1", "start_year": 1880, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "F", "year_label": "1881-2", "start_year": 1881, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "G", "year_label": "1882-3", "start_year": 1882, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "H", "year_label": "1883-4", "start_year": 1883, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "I", "year_label": "1884-5", "start_year": 1884, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "K", "year_label": "1885-6", "start_year": 1885, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "L", "year_label": "1886-7", "start_year": 1886, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "M", "year_label": "1887-8", "start_year": 1887, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "N", "year_label": "1888-9", "start_year": 1888, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "O", "year_label": "1889-90", "start_year": 1889, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "P", "year_label": "1890-1", "start_year": 1890, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Q", "year_label": "1891-2", "start_year": 1891, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "R", "year_label": "1892-3", "start_year": 1892, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "S", "year_label": "1893-4", "start_year": 1893, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "T", "year_label": "1894-5", "start_year": 1894, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "U", "year_label": "1895-6", "start_year": 1895, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "LON-22", "start_year": 1896, "end_year": 1915, "label": "1896-7 to 1915-6", "letter_style": "Roman small", "shield_shape": null, "omitted_letters": "j, v", "notes": null, "entries": [ { "letter": "a", "year_label": "1896-7", "start_year": 1896, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "b", "year_label": "1897-8", "start_year": 1897, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "c", "year_label": "1898-9", "start_year": 1898, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "d", "year_label": "1899-00", "start_year": 1899, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "e", "year_label": "1900-1", "start_year": 1900, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "f", "year_label": "1901-2", "start_year": 1901, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "g", "year_label": "1902-3", "start_year": 1902, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "h", "year_label": "1903-4", "start_year": 1903, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "i", "year_label": "1904-5", "start_year": 1904, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "k", "year_label": "1905-6", "start_year": 1905, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "l", "year_label": "1906-7", "start_year": 1906, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "m", "year_label": "1907-8", "start_year": 1907, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "n", "year_label": "1908-9", "start_year": 1908, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "o", "year_label": "1909-10", "start_year": 1909, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "p", "year_label": "1910-1", "start_year": 1910, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "q", "year_label": "1911-2", "start_year": 1911, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "r", "year_label": "1912-3", "start_year": 1912, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "s", "year_label": "1913-4", "start_year": 1913, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "t", "year_label": "1914-5", "start_year": 1914, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "u", "year_label": "1915-6", "start_year": 1915, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "LON-23", "start_year": 1916, "end_year": 1924, "label": "1916-7 to 1924-5", "letter_style": "black letter small", "shield_shape": null, "omitted_letters": "j (expected)", "notes": "Cycle continues after 1924-5; later letters are not in our public-domain sources and are deliberately not filled in. Jackson (1921) stops at d 1919-20.", "entries": [ { "letter": "a", "year_label": "1916-7", "start_year": 1916, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "b", "year_label": "1917-8", "start_year": 1917, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "c", "year_label": "1918-9", "start_year": 1918, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "d", "year_label": "1919-20", "start_year": 1919, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "e", "year_label": "1920-1", "start_year": 1920, "confidence": "medium", "flags": [ "single_source" ], "sources": [ "CH" ] }, { "letter": "f", "year_label": "1921-2", "start_year": 1921, "confidence": "medium", "flags": [ "single_source" ], "sources": [ "CH" ] }, { "letter": "g", "year_label": "1922-3", "start_year": 1922, "confidence": "medium", "flags": [ "single_source" ], "sources": [ "CH" ] }, { "letter": "h", "year_label": "1923-4", "start_year": 1923, "confidence": "medium", "flags": [ "single_source" ], "sources": [ "CH" ] }, { "letter": "i", "year_label": "1924-5", "start_year": 1924, "confidence": "medium", "flags": [ "single_source" ], "sources": [ "CH" ] } ] } ] }, { "office_id": "birmingham", "name": "Birmingham", "town_mark": "An anchor.", "years_active": "1773-present (dataset covers 1773-1924 plus shared UK cycles from 1975)", "letter_changeover": "July (Birmingham Assay Office: July until 1974). From 1975, 1 January.", "cycles": [ { "cycle_id": "BIR-01", "start_year": 1773, "end_year": 1797, "label": "1773-4 to 1797-8", "letter_style": "Roman capitals", "shield_shape": null, "omitted_letters": "J", "notes": null, "entries": [ { "letter": "A", "year_label": "1773-4", "start_year": 1773, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "B", "year_label": "1774-5", "start_year": 1774, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "C", "year_label": "1775-6", "start_year": 1775, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "D", "year_label": "1776-7", "start_year": 1776, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "E", "year_label": "1777-8", "start_year": 1777, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "F", "year_label": "1778-9", "start_year": 1778, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "G", "year_label": "1779-80", "start_year": 1779, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "H", "year_label": "1780-1", "start_year": 1780, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "I", "year_label": "1781-2", "start_year": 1781, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "K", "year_label": "1782-3", "start_year": 1782, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "L", "year_label": "1783-4", "start_year": 1783, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "M", "year_label": "1784-5", "start_year": 1784, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "N", "year_label": "1785-6", "start_year": 1785, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "O", "year_label": "1786-7", "start_year": 1786, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "P", "year_label": "1787-8", "start_year": 1787, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Q", "year_label": "1788-9", "start_year": 1788, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "R", "year_label": "1789-90", "start_year": 1789, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "S", "year_label": "1790-1", "start_year": 1790, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "T", "year_label": "1791-2", "start_year": 1791, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "U", "year_label": "1792-3", "start_year": 1792, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "V", "year_label": "1793-4", "start_year": 1793, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "W", "year_label": "1794-5", "start_year": 1794, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "X", "year_label": "1795-6", "start_year": 1795, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Y", "year_label": "1796-7", "start_year": 1796, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Z", "year_label": "1797-8", "start_year": 1797, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "BIR-02", "start_year": 1798, "end_year": 1823, "label": "1798-9 to 1823-4", "letter_style": "Roman small", "shield_shape": null, "omitted_letters": "none (j used, 1807-8)", "notes": null, "entries": [ { "letter": "a", "year_label": "1798-9", "start_year": 1798, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "b", "year_label": "1799-00", "start_year": 1799, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "c", "year_label": "1800-1", "start_year": 1800, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "d", "year_label": "1801-2", "start_year": 1801, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "e", "year_label": "1802-3", "start_year": 1802, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "f", "year_label": "1803-4", "start_year": 1803, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "g", "year_label": "1804-5", "start_year": 1804, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "h", "year_label": "1805-6", "start_year": 1805, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "i", "year_label": "1806-7", "start_year": 1806, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "j", "year_label": "1807-8", "start_year": 1807, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "k", "year_label": "1808-9", "start_year": 1808, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "l", "year_label": "1809-10", "start_year": 1809, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "m", "year_label": "1810-1", "start_year": 1810, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "n", "year_label": "1811-2", "start_year": 1811, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "o", "year_label": "1812-3", "start_year": 1812, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "p", "year_label": "1813-4", "start_year": 1813, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "q", "year_label": "1814-5", "start_year": 1814, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "r", "year_label": "1815-6", "start_year": 1815, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "s", "year_label": "1816-7", "start_year": 1816, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "t", "year_label": "1817-8", "start_year": 1817, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "u", "year_label": "1818-9", "start_year": 1818, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "v", "year_label": "1819-20", "start_year": 1819, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "w", "year_label": "1820-1", "start_year": 1820, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "x", "year_label": "1821-2", "start_year": 1821, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "y", "year_label": "1822-3", "start_year": 1822, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "z", "year_label": "1823-4", "start_year": 1823, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "BIR-03", "start_year": 1824, "end_year": 1848, "label": "1824-5 to 1848-9", "letter_style": "black letter capitals", "shield_shape": null, "omitted_letters": "J", "notes": null, "entries": [ { "letter": "A", "year_label": "1824-5", "start_year": 1824, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "B", "year_label": "1825-6", "start_year": 1825, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "C", "year_label": "1826-7", "start_year": 1826, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "D", "year_label": "1827-8", "start_year": 1827, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "E", "year_label": "1828-9", "start_year": 1828, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "F", "year_label": "1829-30", "start_year": 1829, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "G", "year_label": "1830-1", "start_year": 1830, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "H", "year_label": "1831-2", "start_year": 1831, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "I", "year_label": "1832-3", "start_year": 1832, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "K", "year_label": "1833-4", "start_year": 1833, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "L", "year_label": "1834-5", "start_year": 1834, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "M", "year_label": "1835-6", "start_year": 1835, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "N", "year_label": "1836-7", "start_year": 1836, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "O", "year_label": "1837-8", "start_year": 1837, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "P", "year_label": "1838-9", "start_year": 1838, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Q", "year_label": "1839-40", "start_year": 1839, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "R", "year_label": "1840-1", "start_year": 1840, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "S", "year_label": "1841-2", "start_year": 1841, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "T", "year_label": "1842-3", "start_year": 1842, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "U", "year_label": "1843-4", "start_year": 1843, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "V", "year_label": "1844-5", "start_year": 1844, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "W", "year_label": "1845-6", "start_year": 1845, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "X", "year_label": "1846-7", "start_year": 1846, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Y", "year_label": "1847-8", "start_year": 1847, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Z", "year_label": "1848-9", "start_year": 1848, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "BIR-04", "start_year": 1849, "end_year": 1874, "label": "1849-50 to 1874-5", "letter_style": "Roman capitals", "shield_shape": null, "omitted_letters": "none (J used, 1858-9)", "notes": null, "entries": [ { "letter": "A", "year_label": "1849-50", "start_year": 1849, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "B", "year_label": "1850-1", "start_year": 1850, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "C", "year_label": "1851-2", "start_year": 1851, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "D", "year_label": "1852-3", "start_year": 1852, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "E", "year_label": "1853-4", "start_year": 1853, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "F", "year_label": "1854-5", "start_year": 1854, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "G", "year_label": "1855-6", "start_year": 1855, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "H", "year_label": "1856-7", "start_year": 1856, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "I", "year_label": "1857-8", "start_year": 1857, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "J", "year_label": "1858-9", "start_year": 1858, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "K", "year_label": "1859-60", "start_year": 1859, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "L", "year_label": "1860-1", "start_year": 1860, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "M", "year_label": "1861-2", "start_year": 1861, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "N", "year_label": "1862-3", "start_year": 1862, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "O", "year_label": "1863-4", "start_year": 1863, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "P", "year_label": "1864-5", "start_year": 1864, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Q", "year_label": "1865-6", "start_year": 1865, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "R", "year_label": "1866-7", "start_year": 1866, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "S", "year_label": "1867-8", "start_year": 1867, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "T", "year_label": "1868-9", "start_year": 1868, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "U", "year_label": "1869-70", "start_year": 1869, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "V", "year_label": "1870-1", "start_year": 1870, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "W", "year_label": "1871-2", "start_year": 1871, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "X", "year_label": "1872-3", "start_year": 1872, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Y", "year_label": "1873-4", "start_year": 1873, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Z", "year_label": "1874-5", "start_year": 1874, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "BIR-05", "start_year": 1875, "end_year": 1899, "label": "1875-6 to 1899-00", "letter_style": "black letter small", "shield_shape": null, "omitted_letters": "j", "notes": null, "entries": [ { "letter": "a", "year_label": "1875-6", "start_year": 1875, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "b", "year_label": "1876-7", "start_year": 1876, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "c", "year_label": "1877-8", "start_year": 1877, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "d", "year_label": "1878-9", "start_year": 1878, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "e", "year_label": "1879-80", "start_year": 1879, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "f", "year_label": "1880-1", "start_year": 1880, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "g", "year_label": "1881-2", "start_year": 1881, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "h", "year_label": "1882-3", "start_year": 1882, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "i", "year_label": "1883-4", "start_year": 1883, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "k", "year_label": "1884-5", "start_year": 1884, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "l", "year_label": "1885-6", "start_year": 1885, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "m", "year_label": "1886-7", "start_year": 1886, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "n", "year_label": "1887-8", "start_year": 1887, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "o", "year_label": "1888-9", "start_year": 1888, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "p", "year_label": "1889-90", "start_year": 1889, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "q", "year_label": "1890-1", "start_year": 1890, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "r", "year_label": "1891-2", "start_year": 1891, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "s", "year_label": "1892-3", "start_year": 1892, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "t", "year_label": "1893-4", "start_year": 1893, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "u", "year_label": "1894-5", "start_year": 1894, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "v", "year_label": "1895-6", "start_year": 1895, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "w", "year_label": "1896-7", "start_year": 1896, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "x", "year_label": "1897-8", "start_year": 1897, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "y", "year_label": "1898-9", "start_year": 1898, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "z", "year_label": "1899-00", "start_year": 1899, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "BIR-06", "start_year": 1900, "end_year": 1924, "label": "1900-1 to 1924-5", "letter_style": "Roman small", "shield_shape": null, "omitted_letters": "j", "notes": "Chaffers (1924) runs to y 1923-4. Jackson (1921) prints the full cycle to z 1924-5.", "entries": [ { "letter": "a", "year_label": "1900-1", "start_year": 1900, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "b", "year_label": "1901-2", "start_year": 1901, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "c", "year_label": "1902-3", "start_year": 1902, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "d", "year_label": "1903-4", "start_year": 1903, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "e", "year_label": "1904-5", "start_year": 1904, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "f", "year_label": "1905-6", "start_year": 1905, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "g", "year_label": "1906-7", "start_year": 1906, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "h", "year_label": "1907-8", "start_year": 1907, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "i", "year_label": "1908-9", "start_year": 1908, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "k", "year_label": "1909-10", "start_year": 1909, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "l", "year_label": "1910-1", "start_year": 1910, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "m", "year_label": "1911-2", "start_year": 1911, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "n", "year_label": "1912-3", "start_year": 1912, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "o", "year_label": "1913-4", "start_year": 1913, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "p", "year_label": "1914-5", "start_year": 1914, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "q", "year_label": "1915-6", "start_year": 1915, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "r", "year_label": "1916-7", "start_year": 1916, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "s", "year_label": "1917-8", "start_year": 1917, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "t", "year_label": "1918-9", "start_year": 1918, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "u", "year_label": "1919-20", "start_year": 1919, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "v", "year_label": "1920-1", "start_year": 1920, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "w", "year_label": "1921-2", "start_year": 1921, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "x", "year_label": "1922-3", "start_year": 1922, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "y", "year_label": "1923-4", "start_year": 1923, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "z", "year_label": "1924-5", "start_year": 1924, "confidence": "medium", "flags": [ "single_source" ], "sources": [ "JK" ] } ] } ] }, { "office_id": "sheffield", "name": "Sheffield", "town_mark": "A crown on silver (1773-1974). From 1975 a rose (not confirmed from our sources; see QA).", "years_active": "1773-present (dataset covers 1773-1923 plus shared UK cycles from 1975)", "letter_changeover": "July (Sheffield Assay Office). From 1975, 1 January.", "cycles": [ { "cycle_id": "SHF-01", "start_year": 1773, "end_year": 1798, "label": "1773-4 to 1798-9", "letter_style": "black letter capitals (irregular order)", "shield_shape": null, "omitted_letters": "irregular; letters chosen out of order", "notes": "Letters were not used in alphabetical order. Both sources give the same sequence. Letter and crown are separate marks.", "entries": [ { "letter": "E", "year_label": "1773-4", "start_year": 1773, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "F", "year_label": "1774-5", "start_year": 1774, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "N", "year_label": "1775-6", "start_year": 1775, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "R", "year_label": "1776-7", "start_year": 1776, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "H", "year_label": "1777-8", "start_year": 1777, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "S", "year_label": "1778-9", "start_year": 1778, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "A", "year_label": "1779-80", "start_year": 1779, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "C", "year_label": "1780-1", "start_year": 1780, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ], "notes": "Crowned C in Jackson; glyph close to E." }, { "letter": "D", "year_label": "1781-2", "start_year": 1781, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "G", "year_label": "1782-3", "start_year": 1782, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "B", "year_label": "1783-4", "start_year": 1783, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "I", "year_label": "1784-5", "start_year": 1784, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ], "notes": "Black-letter I that resembles J." }, { "letter": "Y", "year_label": "1785-6", "start_year": 1785, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ], "notes": "Jackson shows a crowned y." }, { "letter": "K", "year_label": "1786-7", "start_year": 1786, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "T", "year_label": "1787-8", "start_year": 1787, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "U", "year_label": "1788-9", "start_year": 1788, "confidence": "high", "flags": [ "duplicate_letter_in_source" ], "sources": [ "CH", "JK" ], "notes": "U is used twice in this cycle (also 1792-3)." }, { "letter": "M", "year_label": "1789-90", "start_year": 1789, "confidence": "high", "flags": [ "duplicate_letter_in_source" ], "sources": [ "CH", "JK" ], "notes": "M is used twice in this cycle (also 1794-5)." }, { "letter": "L", "year_label": "1790-1", "start_year": 1790, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "P", "year_label": "1791-2", "start_year": 1791, "confidence": "medium", "flags": [ "case_disputed" ], "sources": [ "CH", "JK" ], "notes": "Jackson's glyph looks lower case." }, { "letter": "U", "year_label": "1792-3", "start_year": 1792, "confidence": "medium", "flags": [ "case_disputed", "duplicate_letter_in_source" ], "sources": [ "CH", "JK" ], "notes": "Second U of the cycle; Jackson shows a lower-case style u." }, { "letter": "O", "year_label": "1793-4", "start_year": 1793, "confidence": "medium", "flags": [ "case_disputed" ], "sources": [ "CH", "JK" ], "notes": "Jackson's glyph looks lower case." }, { "letter": "M", "year_label": "1794-5", "start_year": 1794, "confidence": "medium", "flags": [ "case_disputed", "duplicate_letter_in_source" ], "sources": [ "CH", "JK" ], "notes": "Second M of the cycle; Jackson shows a lower-case style m." }, { "letter": "Q", "year_label": "1795-6", "start_year": 1795, "confidence": "medium", "flags": [ "case_disputed" ], "sources": [ "CH", "JK" ], "notes": "Jackson's glyph looks lower case." }, { "letter": "Z", "year_label": "1796-7", "start_year": 1796, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "X", "year_label": "1797-8", "start_year": 1797, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "V", "year_label": "1798-9", "start_year": 1798, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "SHF-02", "start_year": 1799, "end_year": 1823, "label": "1799-00 to 1823-4", "letter_style": "Roman capitals (irregular order)", "shield_shape": null, "omitted_letters": "irregular", "notes": "Irregular order; letter and crown struck in one punch.", "entries": [ { "letter": "E", "year_label": "1799-00", "start_year": 1799, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "N", "year_label": "1800-1", "start_year": 1800, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "H", "year_label": "1801-2", "start_year": 1801, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "M", "year_label": "1802-3", "start_year": 1802, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "F", "year_label": "1803-4", "start_year": 1803, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "G", "year_label": "1804-5", "start_year": 1804, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "B", "year_label": "1805-6", "start_year": 1805, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "A", "year_label": "1806-7", "start_year": 1806, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "S", "year_label": "1807-8", "start_year": 1807, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "P", "year_label": "1808-9", "start_year": 1808, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "K", "year_label": "1809-10", "start_year": 1809, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "L", "year_label": "1810-1", "start_year": 1810, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "C", "year_label": "1811-2", "start_year": 1811, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "D", "year_label": "1812-3", "start_year": 1812, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "R", "year_label": "1813-4", "start_year": 1813, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "W", "year_label": "1814-5", "start_year": 1814, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "O", "year_label": "1815-6", "start_year": 1815, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "T", "year_label": "1816-7", "start_year": 1816, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "X", "year_label": "1817-8", "start_year": 1817, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "I", "year_label": "1818-9", "start_year": 1818, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "V", "year_label": "1819-20", "start_year": 1819, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Q", "year_label": "1820-1", "start_year": 1820, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Y", "year_label": "1821-2", "start_year": 1821, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Z", "year_label": "1822-3", "start_year": 1822, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "U", "year_label": "1823-4", "start_year": 1823, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "SHF-03", "start_year": 1824, "end_year": 1843, "label": "1824-5 to 1843-4", "letter_style": "Roman small", "shield_shape": null, "omitted_letters": "i, j, n, o, w, y", "notes": null, "entries": [ { "letter": "a", "year_label": "1824-5", "start_year": 1824, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "b", "year_label": "1825-6", "start_year": 1825, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "c", "year_label": "1826-7", "start_year": 1826, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "d", "year_label": "1827-8", "start_year": 1827, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "e", "year_label": "1828-9", "start_year": 1828, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "f", "year_label": "1829-30", "start_year": 1829, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "g", "year_label": "1830-1", "start_year": 1830, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "h", "year_label": "1831-2", "start_year": 1831, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "k", "year_label": "1832-3", "start_year": 1832, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "l", "year_label": "1833-4", "start_year": 1833, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "m", "year_label": "1834-5", "start_year": 1834, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "p", "year_label": "1835-6", "start_year": 1835, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "q", "year_label": "1836-7", "start_year": 1836, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "r", "year_label": "1837-8", "start_year": 1837, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "s", "year_label": "1838-9", "start_year": 1838, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "t", "year_label": "1839-40", "start_year": 1839, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "u", "year_label": "1840-1", "start_year": 1840, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "v", "year_label": "1841-2", "start_year": 1841, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "x", "year_label": "1842-3", "start_year": 1842, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "z", "year_label": "1843-4", "start_year": 1843, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "SHF-04", "start_year": 1844, "end_year": 1867, "label": "1844-5 to 1867-8", "letter_style": "Roman capitals", "shield_shape": null, "omitted_letters": "J, Q", "notes": null, "entries": [ { "letter": "A", "year_label": "1844-5", "start_year": 1844, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "B", "year_label": "1845-6", "start_year": 1845, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "C", "year_label": "1846-7", "start_year": 1846, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "D", "year_label": "1847-8", "start_year": 1847, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "E", "year_label": "1848-9", "start_year": 1848, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "F", "year_label": "1849-50", "start_year": 1849, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "G", "year_label": "1850-1", "start_year": 1850, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "H", "year_label": "1851-2", "start_year": 1851, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "I", "year_label": "1852-3", "start_year": 1852, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "K", "year_label": "1853-4", "start_year": 1853, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "L", "year_label": "1854-5", "start_year": 1854, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "M", "year_label": "1855-6", "start_year": 1855, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "N", "year_label": "1856-7", "start_year": 1856, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "O", "year_label": "1857-8", "start_year": 1857, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "P", "year_label": "1858-9", "start_year": 1858, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "R", "year_label": "1859-60", "start_year": 1859, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "S", "year_label": "1860-1", "start_year": 1860, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "T", "year_label": "1861-2", "start_year": 1861, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "U", "year_label": "1862-3", "start_year": 1862, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "V", "year_label": "1863-4", "start_year": 1863, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "W", "year_label": "1864-5", "start_year": 1864, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "X", "year_label": "1865-6", "start_year": 1865, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Y", "year_label": "1866-7", "start_year": 1866, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Z", "year_label": "1867-8", "start_year": 1867, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "SHF-05", "start_year": 1868, "end_year": 1892, "label": "1868-9 to 1892-3", "letter_style": "block (sans-serif) capitals", "shield_shape": null, "omitted_letters": "I (J used)", "notes": null, "entries": [ { "letter": "A", "year_label": "1868-9", "start_year": 1868, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "B", "year_label": "1869-70", "start_year": 1869, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "C", "year_label": "1870-1", "start_year": 1870, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "D", "year_label": "1871-2", "start_year": 1871, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "E", "year_label": "1872-3", "start_year": 1872, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "F", "year_label": "1873-4", "start_year": 1873, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "G", "year_label": "1874-5", "start_year": 1874, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "H", "year_label": "1875-6", "start_year": 1875, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "J", "year_label": "1876-7", "start_year": 1876, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "K", "year_label": "1877-8", "start_year": 1877, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "L", "year_label": "1878-9", "start_year": 1878, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "M", "year_label": "1879-80", "start_year": 1879, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "N", "year_label": "1880-1", "start_year": 1880, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "O", "year_label": "1881-2", "start_year": 1881, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "P", "year_label": "1882-3", "start_year": 1882, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Q", "year_label": "1883-4", "start_year": 1883, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "R", "year_label": "1884-5", "start_year": 1884, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "S", "year_label": "1885-6", "start_year": 1885, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "T", "year_label": "1886-7", "start_year": 1886, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "U", "year_label": "1887-8", "start_year": 1887, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "V", "year_label": "1888-9", "start_year": 1888, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "W", "year_label": "1889-90", "start_year": 1889, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "X", "year_label": "1890-1", "start_year": 1890, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Y", "year_label": "1891-2", "start_year": 1891, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Z", "year_label": "1892-3", "start_year": 1892, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "SHF-06", "start_year": 1893, "end_year": 1917, "label": "1893-4 to 1917-8", "letter_style": "black letter small", "shield_shape": null, "omitted_letters": "j", "notes": null, "entries": [ { "letter": "a", "year_label": "1893-4", "start_year": 1893, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "b", "year_label": "1894-5", "start_year": 1894, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "c", "year_label": "1895-6", "start_year": 1895, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "d", "year_label": "1896-7", "start_year": 1896, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "e", "year_label": "1897-8", "start_year": 1897, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "f", "year_label": "1898-9", "start_year": 1898, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "g", "year_label": "1899-00", "start_year": 1899, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "h", "year_label": "1900-1", "start_year": 1900, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "i", "year_label": "1901-2", "start_year": 1901, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "k", "year_label": "1902-3", "start_year": 1902, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "l", "year_label": "1903-4", "start_year": 1903, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "m", "year_label": "1904-5", "start_year": 1904, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "n", "year_label": "1905-6", "start_year": 1905, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "o", "year_label": "1906-7", "start_year": 1906, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "p", "year_label": "1907-8", "start_year": 1907, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "q", "year_label": "1908-9", "start_year": 1908, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "r", "year_label": "1909-10", "start_year": 1909, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "s", "year_label": "1910-1", "start_year": 1910, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "t", "year_label": "1911-2", "start_year": 1911, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "u", "year_label": "1912-3", "start_year": 1912, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "v", "year_label": "1913-4", "start_year": 1913, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "w", "year_label": "1914-5", "start_year": 1914, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "x", "year_label": "1915-6", "start_year": 1915, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "y", "year_label": "1916-7", "start_year": 1916, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "z", "year_label": "1917-8", "start_year": 1917, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "SHF-07", "start_year": 1918, "end_year": 1923, "label": "1918-9 to 1923-4", "letter_style": "Roman small", "shield_shape": null, "omitted_letters": null, "notes": "Cycle continues after 1923-4; later letters not in our public-domain sources. Jackson stops at c 1920-1.", "entries": [ { "letter": "a", "year_label": "1918-9", "start_year": 1918, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "b", "year_label": "1919-20", "start_year": 1919, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "c", "year_label": "1920-1", "start_year": 1920, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "d", "year_label": "1921-2", "start_year": 1921, "confidence": "medium", "flags": [ "single_source" ], "sources": [ "CH" ] }, { "letter": "e", "year_label": "1922-3", "start_year": 1922, "confidence": "medium", "flags": [ "single_source" ], "sources": [ "CH" ] }, { "letter": "f", "year_label": "1923-4", "start_year": 1923, "confidence": "medium", "flags": [ "single_source" ], "sources": [ "CH" ] } ] } ] }, { "office_id": "chester", "name": "Chester", "town_mark": "City arms. From 1701 until about 1779: three half-lions joined to a wheatsheaf. Before 1701 and again from about 1779-80: a sword upright between three wheatsheaves. A leopard's head was also struck (crowned until about 1823) until 1839.", "years_active": "Dataset covers 1701-1750 and 1776-1924 (gap 1751-1775).", "letter_changeover": null, "cycles": [ { "cycle_id": "CHE-03", "start_year": 1701, "end_year": 1725, "label": "1701-2 to 1725-6", "letter_style": "Roman capitals", "shield_shape": null, "omitted_letters": "J", "notes": "Britannia standard marks until about 1719-20.", "entries": [ { "letter": "A", "year_label": "1701-2", "start_year": 1701, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "B", "year_label": "1702-3", "start_year": 1702, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "C", "year_label": "1703-4", "start_year": 1703, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "D", "year_label": "1704-5", "start_year": 1704, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "E", "year_label": "1705-6", "start_year": 1705, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "F", "year_label": "1706-7", "start_year": 1706, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "G", "year_label": "1707-8", "start_year": 1707, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "H", "year_label": "1708-9", "start_year": 1708, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "I", "year_label": "1709-10", "start_year": 1709, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "K", "year_label": "1710-1", "start_year": 1710, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "L", "year_label": "1711-2", "start_year": 1711, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "M", "year_label": "1712-3", "start_year": 1712, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "N", "year_label": "1713-4", "start_year": 1713, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "O", "year_label": "1714-5", "start_year": 1714, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "P", "year_label": "1715-6", "start_year": 1715, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Q", "year_label": "1716-7", "start_year": 1716, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "R", "year_label": "1717-8", "start_year": 1717, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "S", "year_label": "1718-9", "start_year": 1718, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "T", "year_label": "1719-20", "start_year": 1719, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "U", "year_label": "1720-1", "start_year": 1720, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "V", "year_label": "1721-2", "start_year": 1721, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "W", "year_label": "1722-3", "start_year": 1722, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "X", "year_label": "1723-4", "start_year": 1723, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Y", "year_label": "1724-5", "start_year": 1724, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Z", "year_label": "1725-6", "start_year": 1725, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "CHE-04", "start_year": 1726, "end_year": 1750, "label": "1726-7 to 1750-1", "letter_style": "script capitals", "shield_shape": null, "omitted_letters": "J (Jackson); Chaffers includes J", "notes": "Both sources agree A-I (1726-1734). From 1735 we follow Jackson; Chaffers shows the same letter one year later. Chaffers ends at Z 1751-2.", "entries": [ { "letter": "A", "year_label": "1726-7", "start_year": 1726, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "B", "year_label": "1727-8", "start_year": 1727, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "C", "year_label": "1728-9", "start_year": 1728, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "D", "year_label": "1729-30", "start_year": 1729, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "E", "year_label": "1730-1", "start_year": 1730, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "F", "year_label": "1731-2", "start_year": 1731, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "G", "year_label": "1732-3", "start_year": 1732, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "H", "year_label": "1733-4", "start_year": 1733, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "I", "year_label": "1734-5", "start_year": 1734, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "K", "year_label": "1735-6", "start_year": 1735, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "JK" ], "alt": { "source": "CH", "letter": "J" }, "notes": "Chaffers inserts a J at 1735-6, so from here its letters run one year behind Jackson." }, { "letter": "L", "year_label": "1736-7", "start_year": 1736, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "JK" ], "alt": { "source": "CH", "letter": "K" }, "notes": "Chaffers inserts a J at 1735-6, so from here its letters run one year behind Jackson." }, { "letter": "M", "year_label": "1737-8", "start_year": 1737, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "JK" ], "alt": { "source": "CH", "letter": "L" }, "notes": "Chaffers inserts a J at 1735-6, so from here its letters run one year behind Jackson." }, { "letter": "N", "year_label": "1738-9", "start_year": 1738, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "JK" ], "alt": { "source": "CH", "letter": "M" }, "notes": "Chaffers inserts a J at 1735-6, so from here its letters run one year behind Jackson." }, { "letter": "O", "year_label": "1739-40", "start_year": 1739, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "JK" ], "alt": { "source": "CH", "letter": "N" }, "notes": "Chaffers inserts a J at 1735-6, so from here its letters run one year behind Jackson." }, { "letter": "P", "year_label": "1740-1", "start_year": 1740, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "JK" ], "alt": { "source": "CH", "letter": "O" }, "notes": "Chaffers inserts a J at 1735-6, so from here its letters run one year behind Jackson." }, { "letter": "Q", "year_label": "1741-2", "start_year": 1741, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "JK" ], "alt": { "source": "CH", "letter": "P" }, "notes": "Chaffers inserts a J at 1735-6, so from here its letters run one year behind Jackson." }, { "letter": "R", "year_label": "1742-3", "start_year": 1742, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "JK" ], "alt": { "source": "CH", "letter": "Q" }, "notes": "Chaffers inserts a J at 1735-6, so from here its letters run one year behind Jackson." }, { "letter": "S", "year_label": "1743-4", "start_year": 1743, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "JK" ], "alt": { "source": "CH", "letter": "R" }, "notes": "Chaffers inserts a J at 1735-6, so from here its letters run one year behind Jackson." }, { "letter": "T", "year_label": "1744-5", "start_year": 1744, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "JK" ], "alt": { "source": "CH", "letter": "S" }, "notes": "Chaffers inserts a J at 1735-6, so from here its letters run one year behind Jackson." }, { "letter": "U", "year_label": "1745-6", "start_year": 1745, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "JK" ], "alt": { "source": "CH", "letter": "T" }, "notes": "Chaffers inserts a J at 1735-6, so from here its letters run one year behind Jackson." }, { "letter": "V", "year_label": "1746-7", "start_year": 1746, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "JK" ], "alt": { "source": "CH", "letter": "U" }, "notes": "Chaffers inserts a J at 1735-6, so from here its letters run one year behind Jackson." }, { "letter": "W", "year_label": "1747-8", "start_year": 1747, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "JK" ], "alt": { "source": "CH", "letter": "V" }, "notes": "Chaffers inserts a J at 1735-6, so from here its letters run one year behind Jackson." }, { "letter": "X", "year_label": "1748-9", "start_year": 1748, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "JK" ], "alt": { "source": "CH", "letter": "W" }, "notes": "Chaffers inserts a J at 1735-6, so from here its letters run one year behind Jackson." }, { "letter": "Y", "year_label": "1749-50", "start_year": 1749, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "JK" ], "alt": { "source": "CH", "letter": "X" }, "notes": "Chaffers inserts a J at 1735-6, so from here its letters run one year behind Jackson." }, { "letter": "Z", "year_label": "1750-1", "start_year": 1750, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "JK" ], "alt": { "source": "CH", "letter": "Y" }, "notes": "Chaffers inserts a J at 1735-6, so from here its letters run one year behind Jackson." } ] }, { "cycle_id": "CHE-06", "start_year": 1776, "end_year": 1796, "label": "1776-7 to 1796-7", "letter_style": "Roman small", "shield_shape": null, "omitted_letters": "j", "notes": "Jackson used. Chaffers gives the same letters one year later (a 1777-8 to u 1796-7, ends at u) and states its figures are not facsimiles.", "entries": [ { "letter": "a", "year_label": "1776-7", "start_year": 1776, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "start_year": 1777 } }, { "letter": "b", "year_label": "1777-8", "start_year": 1777, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "start_year": 1778 } }, { "letter": "c", "year_label": "1778-9", "start_year": 1778, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "start_year": 1779 } }, { "letter": "d", "year_label": "1779-80", "start_year": 1779, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "start_year": 1780 } }, { "letter": "e", "year_label": "1780-1", "start_year": 1780, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "start_year": 1781 } }, { "letter": "f", "year_label": "1781-2", "start_year": 1781, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "start_year": 1782 } }, { "letter": "g", "year_label": "1782-3", "start_year": 1782, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "start_year": 1783 } }, { "letter": "h", "year_label": "1783-4", "start_year": 1783, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "start_year": 1784 } }, { "letter": "i", "year_label": "1784-5", "start_year": 1784, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "start_year": 1785 } }, { "letter": "k", "year_label": "1785-6", "start_year": 1785, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "start_year": 1786 } }, { "letter": "l", "year_label": "1786-7", "start_year": 1786, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "start_year": 1787 } }, { "letter": "m", "year_label": "1787-8", "start_year": 1787, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "start_year": 1788 } }, { "letter": "n", "year_label": "1788-9", "start_year": 1788, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "start_year": 1789 } }, { "letter": "o", "year_label": "1789-90", "start_year": 1789, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "start_year": 1790 } }, { "letter": "p", "year_label": "1790-1", "start_year": 1790, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "start_year": 1791 } }, { "letter": "q", "year_label": "1791-2", "start_year": 1791, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "start_year": 1792 } }, { "letter": "r", "year_label": "1792-3", "start_year": 1792, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "start_year": 1793 } }, { "letter": "s", "year_label": "1793-4", "start_year": 1793, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "start_year": 1794 } }, { "letter": "t", "year_label": "1794-5", "start_year": 1794, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "start_year": 1795 } }, { "letter": "u", "year_label": "1795-6", "start_year": 1795, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "start_year": 1796 } }, { "letter": "v", "year_label": "1796-7", "start_year": 1796, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "start_year": 1797 } } ] }, { "cycle_id": "CHE-07", "start_year": 1797, "end_year": 1817, "label": "1797-8 to 1817-8", "letter_style": "Roman capitals", "shield_shape": null, "omitted_letters": "J", "notes": null, "entries": [ { "letter": "A", "year_label": "1797-8", "start_year": 1797, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "B", "year_label": "1798-9", "start_year": 1798, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "C", "year_label": "1799-00", "start_year": 1799, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "D", "year_label": "1800-1", "start_year": 1800, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "E", "year_label": "1801-2", "start_year": 1801, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "F", "year_label": "1802-3", "start_year": 1802, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "G", "year_label": "1803-4", "start_year": 1803, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "H", "year_label": "1804-5", "start_year": 1804, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "I", "year_label": "1805-6", "start_year": 1805, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "K", "year_label": "1806-7", "start_year": 1806, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "L", "year_label": "1807-8", "start_year": 1807, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "M", "year_label": "1808-9", "start_year": 1808, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "N", "year_label": "1809-10", "start_year": 1809, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "O", "year_label": "1810-1", "start_year": 1810, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "P", "year_label": "1811-2", "start_year": 1811, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Q", "year_label": "1812-3", "start_year": 1812, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "R", "year_label": "1813-4", "start_year": 1813, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "S", "year_label": "1814-5", "start_year": 1814, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "T", "year_label": "1815-6", "start_year": 1815, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "U", "year_label": "1816-7", "start_year": 1816, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "V", "year_label": "1817-8", "start_year": 1817, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "CHE-08", "start_year": 1818, "end_year": 1838, "label": "1818-9 to 1838-9", "letter_style": "Roman capitals", "shield_shape": null, "omitted_letters": "J", "notes": "Jackson used for 1821-1836 where Chaffers runs one year earlier. Both end with U 1838-9.", "entries": [ { "letter": "A", "year_label": "1818-9", "start_year": 1818, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "B", "year_label": "1819-20", "start_year": 1819, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "C", "year_label": "1820-1", "start_year": 1820, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "D", "year_label": "1821-3", "start_year": 1821, "confidence": "low", "flags": [ "multi_year_letter", "year_disputed" ], "sources": [ "CH", "JK" ], "end_year": 1822, "notes": "Jackson: D used for two assay years (1821-2 and 1822-3). Chaffers: D 1821-2 only." }, { "letter": "E", "year_label": "1823-4", "start_year": 1823, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "start_year": 1822 }, "notes": "Chaffers puts this letter one year earlier." }, { "letter": "F", "year_label": "1824-5", "start_year": 1824, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "start_year": 1823 }, "notes": "Chaffers puts this letter one year earlier." }, { "letter": "G", "year_label": "1825-6", "start_year": 1825, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "start_year": 1824 }, "notes": "Chaffers puts this letter one year earlier." }, { "letter": "H", "year_label": "1826-7", "start_year": 1826, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "start_year": 1825 }, "notes": "Chaffers puts this letter one year earlier." }, { "letter": "I", "year_label": "1827-8", "start_year": 1827, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "start_year": 1826 }, "notes": "Chaffers puts this letter one year earlier." }, { "letter": "K", "year_label": "1828-9", "start_year": 1828, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "start_year": 1827 }, "notes": "Chaffers puts this letter one year earlier." }, { "letter": "L", "year_label": "1829-30", "start_year": 1829, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "start_year": 1828 }, "notes": "Chaffers puts this letter one year earlier." }, { "letter": "M", "year_label": "1830-1", "start_year": 1830, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "start_year": 1829 }, "notes": "Chaffers puts this letter one year earlier." }, { "letter": "N", "year_label": "1831-2", "start_year": 1831, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "start_year": 1830 }, "notes": "Chaffers puts this letter one year earlier." }, { "letter": "O", "year_label": "1832-3", "start_year": 1832, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "start_year": 1831 }, "notes": "Chaffers puts this letter one year earlier." }, { "letter": "P", "year_label": "1833-4", "start_year": 1833, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "start_year": 1832 }, "notes": "Chaffers puts this letter one year earlier." }, { "letter": "Q", "year_label": "1834-5", "start_year": 1834, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "start_year": 1833 }, "notes": "Chaffers puts this letter one year earlier." }, { "letter": "R", "year_label": "1835-6", "start_year": 1835, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "start_year": 1834 }, "notes": "Chaffers puts this letter one year earlier." }, { "letter": "S", "year_label": "1836-7", "start_year": 1836, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "start_year": 1835 }, "notes": "Chaffers puts this letter one year earlier." }, { "letter": "T", "year_label": "1837-8", "start_year": 1837, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "start_year": 1836 }, "notes": "Chaffers puts this letter one year earlier." }, { "letter": "U", "year_label": "1838-9", "start_year": 1838, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "CHE-09", "start_year": 1839, "end_year": 1863, "label": "1839-40 to 1863-4", "letter_style": "black letter capitals", "shield_shape": null, "omitted_letters": "J", "notes": null, "entries": [ { "letter": "A", "year_label": "1839-40", "start_year": 1839, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "B", "year_label": "1840-1", "start_year": 1840, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "C", "year_label": "1841-2", "start_year": 1841, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "D", "year_label": "1842-3", "start_year": 1842, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "E", "year_label": "1843-4", "start_year": 1843, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "F", "year_label": "1844-5", "start_year": 1844, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "G", "year_label": "1845-6", "start_year": 1845, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "H", "year_label": "1846-7", "start_year": 1846, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "I", "year_label": "1847-8", "start_year": 1847, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "K", "year_label": "1848-9", "start_year": 1848, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "L", "year_label": "1849-50", "start_year": 1849, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "M", "year_label": "1850-1", "start_year": 1850, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "N", "year_label": "1851-2", "start_year": 1851, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "O", "year_label": "1852-3", "start_year": 1852, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "P", "year_label": "1853-4", "start_year": 1853, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Q", "year_label": "1854-5", "start_year": 1854, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "R", "year_label": "1855-6", "start_year": 1855, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "S", "year_label": "1856-7", "start_year": 1856, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "T", "year_label": "1857-8", "start_year": 1857, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "U", "year_label": "1858-9", "start_year": 1858, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "V", "year_label": "1859-60", "start_year": 1859, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "W", "year_label": "1860-1", "start_year": 1860, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "X", "year_label": "1861-2", "start_year": 1861, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Y", "year_label": "1862-3", "start_year": 1862, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Z", "year_label": "1863-4", "start_year": 1863, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "CHE-10", "start_year": 1864, "end_year": 1883, "label": "1864-5 to 1883-4", "letter_style": "black letter small", "shield_shape": null, "omitted_letters": "j", "notes": null, "entries": [ { "letter": "a", "year_label": "1864-5", "start_year": 1864, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "b", "year_label": "1865-6", "start_year": 1865, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "c", "year_label": "1866-7", "start_year": 1866, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "d", "year_label": "1867-8", "start_year": 1867, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "e", "year_label": "1868-9", "start_year": 1868, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "f", "year_label": "1869-70", "start_year": 1869, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "g", "year_label": "1870-1", "start_year": 1870, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "h", "year_label": "1871-2", "start_year": 1871, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "i", "year_label": "1872-3", "start_year": 1872, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "k", "year_label": "1873-4", "start_year": 1873, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "l", "year_label": "1874-5", "start_year": 1874, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "m", "year_label": "1875-6", "start_year": 1875, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "n", "year_label": "1876-7", "start_year": 1876, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "o", "year_label": "1877-8", "start_year": 1877, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "p", "year_label": "1878-9", "start_year": 1878, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "q", "year_label": "1879-80", "start_year": 1879, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "r", "year_label": "1880-1", "start_year": 1880, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "s", "year_label": "1881-2", "start_year": 1881, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "t", "year_label": "1882-3", "start_year": 1882, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "u", "year_label": "1883-4", "start_year": 1883, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "CHE-11", "start_year": 1884, "end_year": 1900, "label": "1884-5 to 1900-1", "letter_style": "Roman capitals", "shield_shape": null, "omitted_letters": "J", "notes": null, "entries": [ { "letter": "A", "year_label": "1884-5", "start_year": 1884, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "B", "year_label": "1885-6", "start_year": 1885, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "C", "year_label": "1886-7", "start_year": 1886, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "D", "year_label": "1887-8", "start_year": 1887, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "E", "year_label": "1888-9", "start_year": 1888, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "F", "year_label": "1889-90", "start_year": 1889, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "G", "year_label": "1890-1", "start_year": 1890, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "H", "year_label": "1891-2", "start_year": 1891, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "I", "year_label": "1892-3", "start_year": 1892, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "K", "year_label": "1893-4", "start_year": 1893, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "L", "year_label": "1894-5", "start_year": 1894, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "M", "year_label": "1895-6", "start_year": 1895, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "N", "year_label": "1896-7", "start_year": 1896, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "O", "year_label": "1897-8", "start_year": 1897, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "P", "year_label": "1898-9", "start_year": 1898, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Q", "year_label": "1899-00", "start_year": 1899, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "R", "year_label": "1900-1", "start_year": 1900, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "CHE-12", "start_year": 1901, "end_year": 1924, "label": "1901-2 to 1924-5", "letter_style": "script capitals", "shield_shape": null, "omitted_letters": "J", "notes": "Jackson stops at V 1921-2; W, X, Y from Chaffers only.", "entries": [ { "letter": "A", "year_label": "1901-2", "start_year": 1901, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "B", "year_label": "1902-3", "start_year": 1902, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "C", "year_label": "1903-4", "start_year": 1903, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "D", "year_label": "1904-5", "start_year": 1904, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "E", "year_label": "1905-6", "start_year": 1905, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "F", "year_label": "1906-7", "start_year": 1906, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "G", "year_label": "1907-8", "start_year": 1907, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "H", "year_label": "1908-9", "start_year": 1908, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "I", "year_label": "1909-10", "start_year": 1909, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "K", "year_label": "1910-1", "start_year": 1910, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "L", "year_label": "1911-2", "start_year": 1911, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "M", "year_label": "1912-3", "start_year": 1912, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "N", "year_label": "1913-4", "start_year": 1913, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "O", "year_label": "1914-5", "start_year": 1914, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "P", "year_label": "1915-6", "start_year": 1915, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Q", "year_label": "1916-7", "start_year": 1916, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "R", "year_label": "1917-8", "start_year": 1917, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "S", "year_label": "1918-9", "start_year": 1918, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "T", "year_label": "1919-20", "start_year": 1919, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "U", "year_label": "1920-1", "start_year": 1920, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "V", "year_label": "1921-2", "start_year": 1921, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "W", "year_label": "1922-3", "start_year": 1922, "confidence": "medium", "flags": [ "single_source" ], "sources": [ "CH" ] }, { "letter": "X", "year_label": "1923-4", "start_year": 1923, "confidence": "medium", "flags": [ "single_source" ], "sources": [ "CH" ] }, { "letter": "Y", "year_label": "1924-5", "start_year": 1924, "confidence": "medium", "flags": [ "single_source" ], "sources": [ "CH" ] } ] } ] }, { "office_id": "exeter", "name": "Exeter", "town_mark": "A castle with three towers.", "years_active": "Dataset covers 1701-1883 (office closed 1883; earlier marks excluded).", "letter_changeover": null, "cycles": [ { "cycle_id": "EXE-01", "start_year": 1701, "end_year": 1724, "label": "1701-2 to 1724-5", "letter_style": "Roman capitals", "shield_shape": null, "omitted_letters": "J, U", "notes": null, "entries": [ { "letter": "A", "year_label": "1701-2", "start_year": 1701, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "B", "year_label": "1702-3", "start_year": 1702, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "C", "year_label": "1703-4", "start_year": 1703, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "D", "year_label": "1704-5", "start_year": 1704, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "E", "year_label": "1705-6", "start_year": 1705, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "F", "year_label": "1706-7", "start_year": 1706, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "G", "year_label": "1707-8", "start_year": 1707, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "H", "year_label": "1708-9", "start_year": 1708, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "I", "year_label": "1709-10", "start_year": 1709, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "K", "year_label": "1710-1", "start_year": 1710, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "L", "year_label": "1711-2", "start_year": 1711, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "M", "year_label": "1712-3", "start_year": 1712, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "N", "year_label": "1713-4", "start_year": 1713, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "O", "year_label": "1714-5", "start_year": 1714, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "P", "year_label": "1715-6", "start_year": 1715, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Q", "year_label": "1716-7", "start_year": 1716, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "R", "year_label": "1717-8", "start_year": 1717, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "S", "year_label": "1718-9", "start_year": 1718, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "T", "year_label": "1719-20", "start_year": 1719, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "V", "year_label": "1720-1", "start_year": 1720, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "W", "year_label": "1721-2", "start_year": 1721, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "X", "year_label": "1722-3", "start_year": 1722, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Y", "year_label": "1723-4", "start_year": 1723, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Z", "year_label": "1724-5", "start_year": 1724, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "EXE-02", "start_year": 1725, "end_year": 1748, "label": "1725-6 to 1748-9", "letter_style": "Roman small", "shield_shape": null, "omitted_letters": "j and one of u/v", "notes": null, "entries": [ { "letter": "a", "year_label": "1725-6", "start_year": 1725, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "b", "year_label": "1726-7", "start_year": 1726, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "c", "year_label": "1727-8", "start_year": 1727, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "d", "year_label": "1728-9", "start_year": 1728, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "e", "year_label": "1729-30", "start_year": 1729, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "f", "year_label": "1730-1", "start_year": 1730, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "g", "year_label": "1731-2", "start_year": 1731, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "h", "year_label": "1732-3", "start_year": 1732, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "i", "year_label": "1733-4", "start_year": 1733, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "k", "year_label": "1734-5", "start_year": 1734, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "l", "year_label": "1735-6", "start_year": 1735, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "m", "year_label": "1736-7", "start_year": 1736, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "n", "year_label": "1737-8", "start_year": 1737, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "o", "year_label": "1738-9", "start_year": 1738, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "p", "year_label": "1739-40", "start_year": 1739, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "q", "year_label": "1740-1", "start_year": 1740, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "r", "year_label": "1741-2", "start_year": 1741, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "s", "year_label": "1742-3", "start_year": 1742, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "t", "year_label": "1743-4", "start_year": 1743, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "u", "year_label": "1744-5", "start_year": 1744, "confidence": "medium", "flags": [ "letter_form_disputed" ], "sources": [ "CH", "JK" ], "alt_letters": [ "v" ], "notes": "Jackson: u. Chaffers: v." }, { "letter": "w", "year_label": "1745-6", "start_year": 1745, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "x", "year_label": "1746-7", "start_year": 1746, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "y", "year_label": "1747-8", "start_year": 1747, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "z", "year_label": "1748-9", "start_year": 1748, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "EXE-03", "start_year": 1749, "end_year": 1772, "label": "1749-50 to 1772-3", "letter_style": "Roman capitals", "shield_shape": null, "omitted_letters": "J and one of U/V", "notes": null, "entries": [ { "letter": "A", "year_label": "1749-50", "start_year": 1749, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "B", "year_label": "1750-1", "start_year": 1750, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "C", "year_label": "1751-2", "start_year": 1751, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "D", "year_label": "1752-3", "start_year": 1752, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "E", "year_label": "1753-4", "start_year": 1753, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "F", "year_label": "1754-5", "start_year": 1754, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "G", "year_label": "1755-6", "start_year": 1755, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "H", "year_label": "1756-7", "start_year": 1756, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "I", "year_label": "1757-8", "start_year": 1757, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "K", "year_label": "1758-9", "start_year": 1758, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "L", "year_label": "1759-60", "start_year": 1759, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "M", "year_label": "1760-1", "start_year": 1760, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "N", "year_label": "1761-2", "start_year": 1761, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "O", "year_label": "1762-3", "start_year": 1762, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "P", "year_label": "1763-4", "start_year": 1763, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Q", "year_label": "1764-5", "start_year": 1764, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "R", "year_label": "1765-6", "start_year": 1765, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "S", "year_label": "1766-7", "start_year": 1766, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "T", "year_label": "1767-8", "start_year": 1767, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "U", "year_label": "1768-9", "start_year": 1768, "confidence": "medium", "flags": [ "letter_form_disputed" ], "sources": [ "CH", "JK" ], "alt_letters": [ "V" ], "notes": "Jackson: U. Chaffers: V." }, { "letter": "W", "year_label": "1769-70", "start_year": 1769, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "X", "year_label": "1770-1", "start_year": 1770, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Y", "year_label": "1771-2", "start_year": 1771, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Z", "year_label": "1772-3", "start_year": 1772, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "EXE-04", "start_year": 1773, "end_year": 1796, "label": "1773-4 to 1796-7", "letter_style": "Roman capitals, changing to Roman small from q (Jackson)", "shield_shape": null, "omitted_letters": "J (and v)", "notes": "Sources disagree. Jackson used: capitals A-P then small q-y. Chaffers shows Roman small a-z (no j, u) one letter per year. King's head duty mark from L 1784-5 in Jackson.", "entries": [ { "letter": "A", "year_label": "1773-4", "start_year": 1773, "confidence": "medium", "flags": [ "case_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "letter": "a" }, "notes": "Letter agrees; Chaffers prints it lower case." }, { "letter": "B", "year_label": "1774-5", "start_year": 1774, "confidence": "medium", "flags": [ "case_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "letter": "b" }, "notes": "Letter agrees; Chaffers prints it lower case." }, { "letter": "C", "year_label": "1775-6", "start_year": 1775, "confidence": "medium", "flags": [ "case_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "letter": "c" }, "notes": "Letter agrees; Chaffers prints it lower case." }, { "letter": "D", "year_label": "1776-7", "start_year": 1776, "confidence": "medium", "flags": [ "case_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "letter": "d" }, "notes": "Letter agrees; Chaffers prints it lower case." }, { "letter": "E", "year_label": "1777-8", "start_year": 1777, "confidence": "medium", "flags": [ "case_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "letter": "e" }, "notes": "Letter agrees; Chaffers prints it lower case." }, { "letter": "F", "year_label": "1778-9", "start_year": 1778, "confidence": "medium", "flags": [ "case_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "letter": "f" }, "notes": "Letter agrees; Chaffers prints it lower case." }, { "letter": "G", "year_label": "1779-80", "start_year": 1779, "confidence": "medium", "flags": [ "case_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "letter": "g" }, "notes": "Letter agrees; Chaffers prints it lower case." }, { "letter": "H", "year_label": "1780-1", "start_year": 1780, "confidence": "medium", "flags": [ "case_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "letter": "h" }, "notes": "Letter agrees; Chaffers prints it lower case." }, { "letter": "I", "year_label": "1781-3", "start_year": 1781, "confidence": "low", "flags": [ "case_disputed", "multi_year_letter", "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "letter": "i" }, "notes": "Jackson: I covers 1781-2 and 1782-3. Chaffers: i 1781-2, k 1782-3.", "end_year": 1782 }, { "letter": "K", "year_label": "1783-4", "start_year": 1783, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "letter": "l" } }, { "letter": "L", "year_label": "1784-5", "start_year": 1784, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "letter": "m" } }, { "letter": "M", "year_label": "1785-6", "start_year": 1785, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "letter": "n" } }, { "letter": "N", "year_label": "1786-7", "start_year": 1786, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "letter": "o" } }, { "letter": "O", "year_label": "1787-8", "start_year": 1787, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "letter": "p" } }, { "letter": "P", "year_label": "1788-9", "start_year": 1788, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "letter": "q" } }, { "letter": "q", "year_label": "1789-90", "start_year": 1789, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "letter": "r" } }, { "letter": "r", "year_label": "1790-1", "start_year": 1790, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "letter": "s" } }, { "letter": "s", "year_label": "1791-2", "start_year": 1791, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "letter": "t" } }, { "letter": "t", "year_label": "1792-3", "start_year": 1792, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "letter": "v" } }, { "letter": "u", "year_label": "1793-4", "start_year": 1793, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "letter": "w" } }, { "letter": "w", "year_label": "1794-5", "start_year": 1794, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "letter": "x" } }, { "letter": "x", "year_label": "1795-6", "start_year": 1795, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "letter": "y" } }, { "letter": "y", "year_label": "1796-7", "start_year": 1796, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "CH", "letter": "z" } } ] }, { "cycle_id": "EXE-05", "start_year": 1797, "end_year": 1816, "label": "1797-8 to 1816-7", "letter_style": "Roman capitals", "shield_shape": null, "omitted_letters": "J", "notes": null, "entries": [ { "letter": "A", "year_label": "1797-8", "start_year": 1797, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "B", "year_label": "1798-9", "start_year": 1798, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "C", "year_label": "1799-00", "start_year": 1799, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "D", "year_label": "1800-1", "start_year": 1800, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "E", "year_label": "1801-2", "start_year": 1801, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "F", "year_label": "1802-3", "start_year": 1802, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "G", "year_label": "1803-4", "start_year": 1803, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "H", "year_label": "1804-5", "start_year": 1804, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "I", "year_label": "1805-6", "start_year": 1805, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "K", "year_label": "1806-7", "start_year": 1806, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "L", "year_label": "1807-8", "start_year": 1807, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "M", "year_label": "1808-9", "start_year": 1808, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "N", "year_label": "1809-10", "start_year": 1809, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "O", "year_label": "1810-1", "start_year": 1810, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "P", "year_label": "1811-2", "start_year": 1811, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Q", "year_label": "1812-3", "start_year": 1812, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "R", "year_label": "1813-4", "start_year": 1813, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "S", "year_label": "1814-5", "start_year": 1814, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "T", "year_label": "1815-6", "start_year": 1815, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "U", "year_label": "1816-7", "start_year": 1816, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "EXE-06", "start_year": 1817, "end_year": 1836, "label": "1817-8 to 1836-7", "letter_style": "Roman small", "shield_shape": null, "omitted_letters": "j", "notes": null, "entries": [ { "letter": "a", "year_label": "1817-8", "start_year": 1817, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "b", "year_label": "1818-9", "start_year": 1818, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "c", "year_label": "1819-20", "start_year": 1819, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "d", "year_label": "1820-1", "start_year": 1820, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "e", "year_label": "1821-2", "start_year": 1821, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "f", "year_label": "1822-3", "start_year": 1822, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "g", "year_label": "1823-4", "start_year": 1823, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "h", "year_label": "1824-5", "start_year": 1824, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "i", "year_label": "1825-6", "start_year": 1825, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "k", "year_label": "1826-7", "start_year": 1826, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "l", "year_label": "1827-8", "start_year": 1827, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "m", "year_label": "1828-9", "start_year": 1828, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "n", "year_label": "1829-30", "start_year": 1829, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "o", "year_label": "1830-1", "start_year": 1830, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "p", "year_label": "1831-2", "start_year": 1831, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "q", "year_label": "1832-3", "start_year": 1832, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "r", "year_label": "1833-4", "start_year": 1833, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "s", "year_label": "1834-5", "start_year": 1834, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "t", "year_label": "1835-6", "start_year": 1835, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "u", "year_label": "1836-7", "start_year": 1836, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "EXE-07", "start_year": 1837, "end_year": 1856, "label": "1837-8 to 1856-7", "letter_style": "black letter capitals", "shield_shape": null, "omitted_letters": "J", "notes": null, "entries": [ { "letter": "A", "year_label": "1837-8", "start_year": 1837, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "B", "year_label": "1838-9", "start_year": 1838, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "C", "year_label": "1839-40", "start_year": 1839, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "D", "year_label": "1840-1", "start_year": 1840, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "E", "year_label": "1841-2", "start_year": 1841, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "F", "year_label": "1842-3", "start_year": 1842, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "G", "year_label": "1843-4", "start_year": 1843, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "H", "year_label": "1844-5", "start_year": 1844, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "I", "year_label": "1845-6", "start_year": 1845, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "K", "year_label": "1846-7", "start_year": 1846, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "L", "year_label": "1847-8", "start_year": 1847, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "M", "year_label": "1848-9", "start_year": 1848, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "N", "year_label": "1849-50", "start_year": 1849, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "O", "year_label": "1850-1", "start_year": 1850, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "P", "year_label": "1851-2", "start_year": 1851, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Q", "year_label": "1852-3", "start_year": 1852, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "R", "year_label": "1853-4", "start_year": 1853, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "S", "year_label": "1854-5", "start_year": 1854, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "T", "year_label": "1855-6", "start_year": 1855, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "U", "year_label": "1856-7", "start_year": 1856, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "EXE-08", "start_year": 1857, "end_year": 1876, "label": "1857-8 to 1876-7", "letter_style": "Roman capitals", "shield_shape": null, "omitted_letters": "J", "notes": null, "entries": [ { "letter": "A", "year_label": "1857-8", "start_year": 1857, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "B", "year_label": "1858-9", "start_year": 1858, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "C", "year_label": "1859-60", "start_year": 1859, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "D", "year_label": "1860-1", "start_year": 1860, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "E", "year_label": "1861-2", "start_year": 1861, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "F", "year_label": "1862-3", "start_year": 1862, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "G", "year_label": "1863-4", "start_year": 1863, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "H", "year_label": "1864-5", "start_year": 1864, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "I", "year_label": "1865-6", "start_year": 1865, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "K", "year_label": "1866-7", "start_year": 1866, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "L", "year_label": "1867-8", "start_year": 1867, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "M", "year_label": "1868-9", "start_year": 1868, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "N", "year_label": "1869-70", "start_year": 1869, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "O", "year_label": "1870-1", "start_year": 1870, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "P", "year_label": "1871-2", "start_year": 1871, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Q", "year_label": "1872-3", "start_year": 1872, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "R", "year_label": "1873-4", "start_year": 1873, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "S", "year_label": "1874-5", "start_year": 1874, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "T", "year_label": "1875-6", "start_year": 1875, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "U", "year_label": "1876-7", "start_year": 1876, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "EXE-09", "start_year": 1877, "end_year": 1882, "label": "1877-8 to 1882-3", "letter_style": "Roman capitals (Chaffers: \"Egyptian\")", "shield_shape": null, "omitted_letters": null, "notes": "Office closed 1883; cycle never completed.", "entries": [ { "letter": "A", "year_label": "1877-8", "start_year": 1877, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "B", "year_label": "1878-9", "start_year": 1878, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "C", "year_label": "1879-80", "start_year": 1879, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "D", "year_label": "1880-1", "start_year": 1880, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "E", "year_label": "1881-2", "start_year": 1881, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "F", "year_label": "1882-3", "start_year": 1882, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] } ] }, { "office_id": "newcastle", "name": "Newcastle upon Tyne", "town_mark": "Three castles on a shield, two above one.", "years_active": "Dataset covers 1791-1883 (office closed 1884; 1702-1790 excluded).", "letter_changeover": null, "cycles": [ { "cycle_id": "NEW-05", "start_year": 1791, "end_year": 1814, "label": "1791-2 to 1814-5", "letter_style": "Roman capitals", "shield_shape": null, "omitted_letters": "J, V", "notes": null, "entries": [ { "letter": "A", "year_label": "1791-2", "start_year": 1791, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "B", "year_label": "1792-3", "start_year": 1792, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "C", "year_label": "1793-4", "start_year": 1793, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "D", "year_label": "1794-5", "start_year": 1794, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "E", "year_label": "1795-6", "start_year": 1795, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "F", "year_label": "1796-7", "start_year": 1796, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "G", "year_label": "1797-8", "start_year": 1797, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "H", "year_label": "1798-9", "start_year": 1798, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "I", "year_label": "1799-00", "start_year": 1799, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "K", "year_label": "1800-1", "start_year": 1800, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "L", "year_label": "1801-2", "start_year": 1801, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "M", "year_label": "1802-3", "start_year": 1802, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "N", "year_label": "1803-4", "start_year": 1803, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "O", "year_label": "1804-5", "start_year": 1804, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "P", "year_label": "1805-6", "start_year": 1805, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Q", "year_label": "1806-7", "start_year": 1806, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "R", "year_label": "1807-8", "start_year": 1807, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "S", "year_label": "1808-9", "start_year": 1808, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "T", "year_label": "1809-10", "start_year": 1809, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "U", "year_label": "1810-1", "start_year": 1810, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "W", "year_label": "1811-2", "start_year": 1811, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "X", "year_label": "1812-3", "start_year": 1812, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Y", "year_label": "1813-4", "start_year": 1813, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Z", "year_label": "1814-5", "start_year": 1814, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "NEW-06", "start_year": 1815, "end_year": 1838, "label": "1815-6 to 1838-9", "letter_style": "Roman small (Chaffers) / Roman capitals (Jackson)", "shield_shape": null, "omitted_letters": "j and one of u/v", "notes": "Both sources agree on which letter goes with which year but not on case: Chaffers prints lower case, Jackson capitals. Treat a capital or small letter as the same year.", "entries": [ { "letter": "a", "year_label": "1815-6", "start_year": 1815, "confidence": "medium", "flags": [ "case_disputed" ], "sources": [ "CH", "JK" ] }, { "letter": "b", "year_label": "1816-7", "start_year": 1816, "confidence": "medium", "flags": [ "case_disputed" ], "sources": [ "CH", "JK" ] }, { "letter": "c", "year_label": "1817-8", "start_year": 1817, "confidence": "medium", "flags": [ "case_disputed" ], "sources": [ "CH", "JK" ] }, { "letter": "d", "year_label": "1818-9", "start_year": 1818, "confidence": "medium", "flags": [ "case_disputed" ], "sources": [ "CH", "JK" ] }, { "letter": "e", "year_label": "1819-20", "start_year": 1819, "confidence": "medium", "flags": [ "case_disputed" ], "sources": [ "CH", "JK" ] }, { "letter": "f", "year_label": "1820-1", "start_year": 1820, "confidence": "medium", "flags": [ "case_disputed" ], "sources": [ "CH", "JK" ] }, { "letter": "g", "year_label": "1821-2", "start_year": 1821, "confidence": "medium", "flags": [ "case_disputed" ], "sources": [ "CH", "JK" ] }, { "letter": "h", "year_label": "1822-3", "start_year": 1822, "confidence": "medium", "flags": [ "case_disputed" ], "sources": [ "CH", "JK" ] }, { "letter": "i", "year_label": "1823-4", "start_year": 1823, "confidence": "medium", "flags": [ "case_disputed" ], "sources": [ "CH", "JK" ] }, { "letter": "k", "year_label": "1824-5", "start_year": 1824, "confidence": "medium", "flags": [ "case_disputed" ], "sources": [ "CH", "JK" ] }, { "letter": "l", "year_label": "1825-6", "start_year": 1825, "confidence": "medium", "flags": [ "case_disputed" ], "sources": [ "CH", "JK" ] }, { "letter": "m", "year_label": "1826-7", "start_year": 1826, "confidence": "medium", "flags": [ "case_disputed" ], "sources": [ "CH", "JK" ] }, { "letter": "n", "year_label": "1827-8", "start_year": 1827, "confidence": "medium", "flags": [ "case_disputed" ], "sources": [ "CH", "JK" ] }, { "letter": "o", "year_label": "1828-9", "start_year": 1828, "confidence": "medium", "flags": [ "case_disputed" ], "sources": [ "CH", "JK" ] }, { "letter": "p", "year_label": "1829-30", "start_year": 1829, "confidence": "medium", "flags": [ "case_disputed" ], "sources": [ "CH", "JK" ] }, { "letter": "q", "year_label": "1830-1", "start_year": 1830, "confidence": "medium", "flags": [ "case_disputed" ], "sources": [ "CH", "JK" ] }, { "letter": "r", "year_label": "1831-2", "start_year": 1831, "confidence": "medium", "flags": [ "case_disputed" ], "sources": [ "CH", "JK" ] }, { "letter": "s", "year_label": "1832-3", "start_year": 1832, "confidence": "medium", "flags": [ "case_disputed" ], "sources": [ "CH", "JK" ] }, { "letter": "t", "year_label": "1833-4", "start_year": 1833, "confidence": "medium", "flags": [ "case_disputed" ], "sources": [ "CH", "JK" ] }, { "letter": "u", "year_label": "1834-5", "start_year": 1834, "confidence": "medium", "flags": [ "case_disputed", "letter_form_disputed" ], "sources": [ "CH", "JK" ], "alt_letters": [ "v", "U" ], "notes": "Chaffers: v. Jackson: U." }, { "letter": "w", "year_label": "1835-6", "start_year": 1835, "confidence": "medium", "flags": [ "case_disputed" ], "sources": [ "CH", "JK" ] }, { "letter": "x", "year_label": "1836-7", "start_year": 1836, "confidence": "medium", "flags": [ "case_disputed" ], "sources": [ "CH", "JK" ] }, { "letter": "y", "year_label": "1837-8", "start_year": 1837, "confidence": "medium", "flags": [ "case_disputed" ], "sources": [ "CH", "JK" ] }, { "letter": "z", "year_label": "1838-9", "start_year": 1838, "confidence": "medium", "flags": [ "case_disputed" ], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "NEW-07", "start_year": 1839, "end_year": 1863, "label": "1839-40 to 1863-4", "letter_style": "Roman capitals", "shield_shape": null, "omitted_letters": "V (J used, 1848-9)", "notes": null, "entries": [ { "letter": "A", "year_label": "1839-40", "start_year": 1839, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "B", "year_label": "1840-1", "start_year": 1840, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "C", "year_label": "1841-2", "start_year": 1841, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "D", "year_label": "1842-3", "start_year": 1842, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "E", "year_label": "1843-4", "start_year": 1843, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "F", "year_label": "1844-5", "start_year": 1844, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "G", "year_label": "1845-6", "start_year": 1845, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "H", "year_label": "1846-7", "start_year": 1846, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "I", "year_label": "1847-8", "start_year": 1847, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "J", "year_label": "1848-9", "start_year": 1848, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "K", "year_label": "1849-50", "start_year": 1849, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "L", "year_label": "1850-1", "start_year": 1850, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "M", "year_label": "1851-2", "start_year": 1851, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "N", "year_label": "1852-3", "start_year": 1852, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "O", "year_label": "1853-4", "start_year": 1853, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "P", "year_label": "1854-5", "start_year": 1854, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Q", "year_label": "1855-6", "start_year": 1855, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "R", "year_label": "1856-7", "start_year": 1856, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "S", "year_label": "1857-8", "start_year": 1857, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "T", "year_label": "1858-9", "start_year": 1858, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "U", "year_label": "1859-60", "start_year": 1859, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "W", "year_label": "1860-1", "start_year": 1860, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "X", "year_label": "1861-2", "start_year": 1861, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Y", "year_label": "1862-3", "start_year": 1862, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Z", "year_label": "1863-4", "start_year": 1863, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "NEW-08", "start_year": 1864, "end_year": 1883, "label": "1864-5 to 1883-4", "letter_style": "Roman small", "shield_shape": null, "omitted_letters": "j", "notes": "Office closed 1884.", "entries": [ { "letter": "a", "year_label": "1864-5", "start_year": 1864, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "b", "year_label": "1865-6", "start_year": 1865, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "c", "year_label": "1866-7", "start_year": 1866, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "d", "year_label": "1867-8", "start_year": 1867, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "e", "year_label": "1868-9", "start_year": 1868, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "f", "year_label": "1869-70", "start_year": 1869, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "g", "year_label": "1870-1", "start_year": 1870, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "h", "year_label": "1871-2", "start_year": 1871, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "i", "year_label": "1872-3", "start_year": 1872, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "k", "year_label": "1873-4", "start_year": 1873, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "l", "year_label": "1874-5", "start_year": 1874, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "m", "year_label": "1875-6", "start_year": 1875, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "n", "year_label": "1876-7", "start_year": 1876, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "o", "year_label": "1877-8", "start_year": 1877, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "p", "year_label": "1878-9", "start_year": 1878, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "q", "year_label": "1879-80", "start_year": 1879, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "r", "year_label": "1880-1", "start_year": 1880, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "s", "year_label": "1881-2", "start_year": 1881, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "t", "year_label": "1882-3", "start_year": 1882, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "u", "year_label": "1883-4", "start_year": 1883, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] } ] }, { "office_id": "edinburgh", "name": "Edinburgh", "town_mark": "A castle with three towers (Edinburgh Assay Office: in use since 1485). Until 1759 the assay master's initials were struck; from 1759 a thistle.", "years_active": "1485-present for the castle mark (dataset covers 1681-1923 plus shared UK cycles from 1975)", "letter_changeover": null, "cycles": [ { "cycle_id": "EDI-01", "start_year": 1681, "end_year": 1704, "label": "1681-2 to 1704-5", "letter_style": "black letter small", "shield_shape": "pointed shield (Chaffers)", "omitted_letters": "j, u", "notes": null, "entries": [ { "letter": "a", "year_label": "1681-2", "start_year": 1681, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "b", "year_label": "1682-3", "start_year": 1682, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "c", "year_label": "1683-4", "start_year": 1683, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "d", "year_label": "1684-5", "start_year": 1684, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "e", "year_label": "1685-6", "start_year": 1685, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "f", "year_label": "1686-7", "start_year": 1686, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "g", "year_label": "1687-8", "start_year": 1687, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "h", "year_label": "1688-9", "start_year": 1688, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "i", "year_label": "1689-90", "start_year": 1689, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "k", "year_label": "1690-1", "start_year": 1690, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "l", "year_label": "1691-2", "start_year": 1691, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "m", "year_label": "1692-3", "start_year": 1692, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "n", "year_label": "1693-4", "start_year": 1693, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "o", "year_label": "1694-5", "start_year": 1694, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "p", "year_label": "1695-6", "start_year": 1695, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "q", "year_label": "1696-7", "start_year": 1696, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "r", "year_label": "1697-8", "start_year": 1697, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "s", "year_label": "1698-9", "start_year": 1698, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "t", "year_label": "1699-00", "start_year": 1699, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "v", "year_label": "1700-1", "start_year": 1700, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "w", "year_label": "1701-2", "start_year": 1701, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "x", "year_label": "1702-3", "start_year": 1702, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "y", "year_label": "1703-4", "start_year": 1703, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "z", "year_label": "1704-5", "start_year": 1704, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "EDI-02", "start_year": 1705, "end_year": 1729, "label": "1705-6 to 1729-30", "letter_style": "Roman capitals", "shield_shape": null, "omitted_letters": "J", "notes": null, "entries": [ { "letter": "A", "year_label": "1705-6", "start_year": 1705, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "B", "year_label": "1706-7", "start_year": 1706, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "C", "year_label": "1707-8", "start_year": 1707, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "D", "year_label": "1708-9", "start_year": 1708, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "E", "year_label": "1709-10", "start_year": 1709, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "F", "year_label": "1710-1", "start_year": 1710, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "G", "year_label": "1711-2", "start_year": 1711, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "H", "year_label": "1712-3", "start_year": 1712, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "I", "year_label": "1713-4", "start_year": 1713, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "K", "year_label": "1714-5", "start_year": 1714, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "L", "year_label": "1715-6", "start_year": 1715, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "M", "year_label": "1716-7", "start_year": 1716, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "N", "year_label": "1717-8", "start_year": 1717, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "O", "year_label": "1718-9", "start_year": 1718, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "P", "year_label": "1719-20", "start_year": 1719, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Q", "year_label": "1720-1", "start_year": 1720, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "R", "year_label": "1721-2", "start_year": 1721, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "S", "year_label": "1722-3", "start_year": 1722, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "T", "year_label": "1723-4", "start_year": 1723, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "U", "year_label": "1724-5", "start_year": 1724, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "V", "year_label": "1725-6", "start_year": 1725, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "W", "year_label": "1726-7", "start_year": 1726, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "X", "year_label": "1727-8", "start_year": 1727, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Y", "year_label": "1728-9", "start_year": 1728, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Z", "year_label": "1729-30", "start_year": 1729, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "EDI-03", "start_year": 1730, "end_year": 1754, "label": "1730-1 to 1754-5", "letter_style": "script (italic) capitals", "shield_shape": "square shield (Chaffers)", "omitted_letters": "J", "notes": null, "entries": [ { "letter": "A", "year_label": "1730-1", "start_year": 1730, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "B", "year_label": "1731-2", "start_year": 1731, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "C", "year_label": "1732-3", "start_year": 1732, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "D", "year_label": "1733-4", "start_year": 1733, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "E", "year_label": "1734-5", "start_year": 1734, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "F", "year_label": "1735-6", "start_year": 1735, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "G", "year_label": "1736-7", "start_year": 1736, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "H", "year_label": "1737-8", "start_year": 1737, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "I", "year_label": "1738-9", "start_year": 1738, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ], "notes": "Script I resembles J." }, { "letter": "K", "year_label": "1739-40", "start_year": 1739, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "L", "year_label": "1740-1", "start_year": 1740, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "M", "year_label": "1741-2", "start_year": 1741, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "N", "year_label": "1742-3", "start_year": 1742, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "O", "year_label": "1743-4", "start_year": 1743, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "P", "year_label": "1744-5", "start_year": 1744, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Q", "year_label": "1745-6", "start_year": 1745, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "R", "year_label": "1746-7", "start_year": 1746, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "S", "year_label": "1747-8", "start_year": 1747, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "T", "year_label": "1748-9", "start_year": 1748, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "U", "year_label": "1749-50", "start_year": 1749, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ], "notes": "Struck as a Roman U in both sources." }, { "letter": "V", "year_label": "1750-1", "start_year": 1750, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "W", "year_label": "1751-2", "start_year": 1751, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "X", "year_label": "1752-3", "start_year": 1752, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Y", "year_label": "1753-4", "start_year": 1753, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Z", "year_label": "1754-5", "start_year": 1754, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "EDI-04", "start_year": 1755, "end_year": 1779, "label": "1755-6 to 1779-80", "letter_style": "black letter (Old English) capitals", "shield_shape": "square shield (Chaffers)", "omitted_letters": "J, W; cycle ends with an ampersand-like glyph", "notes": "Thistle replaced the assay master's initials in 1759.", "entries": [ { "letter": "A", "year_label": "1755-6", "start_year": 1755, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "B", "year_label": "1756-7", "start_year": 1756, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "C", "year_label": "1757-8", "start_year": 1757, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "D", "year_label": "1758-9", "start_year": 1758, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "E", "year_label": "1759-60", "start_year": 1759, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "F", "year_label": "1760-1", "start_year": 1760, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "G", "year_label": "1761-2", "start_year": 1761, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "H", "year_label": "1762-3", "start_year": 1762, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "I", "year_label": "1763-4", "start_year": 1763, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "K", "year_label": "1764-5", "start_year": 1764, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "L", "year_label": "1765-6", "start_year": 1765, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "M", "year_label": "1766-7", "start_year": 1766, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "N", "year_label": "1767-8", "start_year": 1767, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "O", "year_label": "1768-9", "start_year": 1768, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "P", "year_label": "1769-70", "start_year": 1769, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Q", "year_label": "1770-1", "start_year": 1770, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "R", "year_label": "1771-2", "start_year": 1771, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "S", "year_label": "1772-3", "start_year": 1772, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "T", "year_label": "1773-4", "start_year": 1773, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "U", "year_label": "1774-5", "start_year": 1774, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "V", "year_label": "1775-6", "start_year": 1775, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "X", "year_label": "1776-7", "start_year": 1776, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Y", "year_label": "1777-8", "start_year": 1777, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Z", "year_label": "1778-9", "start_year": 1778, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "&", "year_label": "1779-80", "start_year": 1779, "confidence": "medium", "flags": [ "letter_form_disputed" ], "sources": [ "CH", "JK" ], "notes": "Last mark of the cycle reads as an ampersand (&); identified with help of a third public-domain source (Proc. Soc. Antiquaries of Scotland). Glyph is ornate in both tables." } ] }, { "cycle_id": "EDI-05", "start_year": 1780, "end_year": 1805, "label": "1780-1 to 1805-6", "letter_style": "Roman capitals", "shield_shape": "pointed shield (Chaffers)", "omitted_letters": "J; G used twice", "notes": "King's head duty mark from E 1784-5.", "entries": [ { "letter": "A", "year_label": "1780-1", "start_year": 1780, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "B", "year_label": "1781-2", "start_year": 1781, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "C", "year_label": "1782-3", "start_year": 1782, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "D", "year_label": "1783-4", "start_year": 1783, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "E", "year_label": "1784-5", "start_year": 1784, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "F", "year_label": "1785-6", "start_year": 1785, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "G", "year_label": "1786-7", "start_year": 1786, "confidence": "high", "flags": [ "duplicate_letter_in_source" ], "sources": [ "CH", "JK" ], "notes": "G used for two years; Chaffers: 'repeated according to the Minutes'; Jackson prints G 1786-7-8." }, { "letter": "G", "year_label": "1787-8", "start_year": 1787, "confidence": "high", "flags": [ "duplicate_letter_in_source" ], "sources": [ "CH", "JK" ], "notes": "Second year of G (see 1786-7)." }, { "letter": "H", "year_label": "1788-9", "start_year": 1788, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "I", "year_label": "1789-90", "start_year": 1789, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ], "notes": "Jackson shows both I and J punches for 1789-90." }, { "letter": "K", "year_label": "1790-1", "start_year": 1790, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "L", "year_label": "1791-2", "start_year": 1791, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "M", "year_label": "1792-3", "start_year": 1792, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "N", "year_label": "1793-4", "start_year": 1793, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "O", "year_label": "1794-5", "start_year": 1794, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "P", "year_label": "1795-6", "start_year": 1795, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Q", "year_label": "1796-7", "start_year": 1796, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "R", "year_label": "1797-8", "start_year": 1797, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "S", "year_label": "1798-9", "start_year": 1798, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "T", "year_label": "1799-00", "start_year": 1799, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "U", "year_label": "1800-1", "start_year": 1800, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "V", "year_label": "1801-2", "start_year": 1801, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "W", "year_label": "1802-3", "start_year": 1802, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "X", "year_label": "1803-4", "start_year": 1803, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Y", "year_label": "1804-5", "start_year": 1804, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Z", "year_label": "1805-6", "start_year": 1805, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "EDI-06", "start_year": 1806, "end_year": 1831, "label": "1806-7 to 1831-2", "letter_style": "Roman small", "shield_shape": "square shield (Chaffers)", "omitted_letters": "none (j used, 1815-6)", "notes": null, "entries": [ { "letter": "a", "year_label": "1806-7", "start_year": 1806, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "b", "year_label": "1807-8", "start_year": 1807, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "c", "year_label": "1808-9", "start_year": 1808, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "d", "year_label": "1809-10", "start_year": 1809, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "e", "year_label": "1810-1", "start_year": 1810, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "f", "year_label": "1811-2", "start_year": 1811, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "g", "year_label": "1812-3", "start_year": 1812, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "h", "year_label": "1813-4", "start_year": 1813, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "i", "year_label": "1814-5", "start_year": 1814, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "j", "year_label": "1815-6", "start_year": 1815, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "k", "year_label": "1816-7", "start_year": 1816, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "l", "year_label": "1817-8", "start_year": 1817, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "m", "year_label": "1818-9", "start_year": 1818, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "n", "year_label": "1819-20", "start_year": 1819, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "o", "year_label": "1820-1", "start_year": 1820, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "p", "year_label": "1821-2", "start_year": 1821, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "q", "year_label": "1822-3", "start_year": 1822, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "r", "year_label": "1823-4", "start_year": 1823, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "s", "year_label": "1824-5", "start_year": 1824, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "t", "year_label": "1825-6", "start_year": 1825, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "u", "year_label": "1826-7", "start_year": 1826, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "v", "year_label": "1827-8", "start_year": 1827, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "w", "year_label": "1828-9", "start_year": 1828, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "x", "year_label": "1829-30", "start_year": 1829, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "y", "year_label": "1830-1", "start_year": 1830, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "z", "year_label": "1831-2", "start_year": 1831, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "EDI-07", "start_year": 1832, "end_year": 1856, "label": "1832-3 to 1856-7", "letter_style": "black letter capitals", "shield_shape": "shield with concave sides (Chaffers)", "omitted_letters": "J", "notes": null, "entries": [ { "letter": "A", "year_label": "1832-3", "start_year": 1832, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "B", "year_label": "1833-4", "start_year": 1833, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "C", "year_label": "1834-5", "start_year": 1834, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "D", "year_label": "1835-6", "start_year": 1835, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "E", "year_label": "1836-7", "start_year": 1836, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "F", "year_label": "1837-8", "start_year": 1837, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "G", "year_label": "1838-9", "start_year": 1838, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "H", "year_label": "1839-40", "start_year": 1839, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "I", "year_label": "1840-1", "start_year": 1840, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "K", "year_label": "1841-2", "start_year": 1841, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "L", "year_label": "1842-3", "start_year": 1842, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "M", "year_label": "1843-4", "start_year": 1843, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "N", "year_label": "1844-5", "start_year": 1844, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "O", "year_label": "1845-6", "start_year": 1845, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "P", "year_label": "1846-7", "start_year": 1846, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Q", "year_label": "1847-8", "start_year": 1847, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "R", "year_label": "1848-9", "start_year": 1848, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "S", "year_label": "1849-50", "start_year": 1849, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "T", "year_label": "1850-1", "start_year": 1850, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "U", "year_label": "1851-2", "start_year": 1851, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "V", "year_label": "1852-3", "start_year": 1852, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "W", "year_label": "1853-4", "start_year": 1853, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "X", "year_label": "1854-5", "start_year": 1854, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Y", "year_label": "1855-6", "start_year": 1855, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Z", "year_label": "1856-7", "start_year": 1856, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "EDI-08", "start_year": 1857, "end_year": 1881, "label": "1857-8 to 1881-2", "letter_style": "\"Egyptian\" (slab-serif) capitals", "shield_shape": "oval (Chaffers)", "omitted_letters": "J", "notes": null, "entries": [ { "letter": "A", "year_label": "1857-8", "start_year": 1857, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "B", "year_label": "1858-9", "start_year": 1858, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "C", "year_label": "1859-60", "start_year": 1859, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "D", "year_label": "1860-1", "start_year": 1860, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "E", "year_label": "1861-2", "start_year": 1861, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "F", "year_label": "1862-3", "start_year": 1862, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "G", "year_label": "1863-4", "start_year": 1863, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "H", "year_label": "1864-5", "start_year": 1864, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "I", "year_label": "1865-6", "start_year": 1865, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "K", "year_label": "1866-7", "start_year": 1866, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "L", "year_label": "1867-8", "start_year": 1867, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "M", "year_label": "1868-9", "start_year": 1868, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "N", "year_label": "1869-70", "start_year": 1869, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "O", "year_label": "1870-1", "start_year": 1870, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "P", "year_label": "1871-2", "start_year": 1871, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Q", "year_label": "1872-3", "start_year": 1872, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "R", "year_label": "1873-4", "start_year": 1873, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "S", "year_label": "1874-5", "start_year": 1874, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "T", "year_label": "1875-6", "start_year": 1875, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "U", "year_label": "1876-7", "start_year": 1876, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "V", "year_label": "1877-8", "start_year": 1877, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "W", "year_label": "1878-9", "start_year": 1878, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "X", "year_label": "1879-80", "start_year": 1879, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Y", "year_label": "1880-1", "start_year": 1880, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Z", "year_label": "1881-2", "start_year": 1881, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "EDI-09", "start_year": 1882, "end_year": 1905, "label": "1882-3 to 1905-6", "letter_style": "black letter small", "shield_shape": null, "omitted_letters": "j, v (Chaffers); Jackson includes v", "notes": null, "entries": [ { "letter": "a", "year_label": "1882-3", "start_year": 1882, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "b", "year_label": "1883-4", "start_year": 1883, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "c", "year_label": "1884-5", "start_year": 1884, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "d", "year_label": "1885-6", "start_year": 1885, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "e", "year_label": "1886-7", "start_year": 1886, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "f", "year_label": "1887-8", "start_year": 1887, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "g", "year_label": "1888-9", "start_year": 1888, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "h", "year_label": "1889-90", "start_year": 1889, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "i", "year_label": "1890-1", "start_year": 1890, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "k", "year_label": "1891-2", "start_year": 1891, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "l", "year_label": "1892-3", "start_year": 1892, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "m", "year_label": "1893-4", "start_year": 1893, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "n", "year_label": "1894-5", "start_year": 1894, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "o", "year_label": "1895-6", "start_year": 1895, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "p", "year_label": "1896-7", "start_year": 1896, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "q", "year_label": "1897-8", "start_year": 1897, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "r", "year_label": "1898-9", "start_year": 1898, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "s", "year_label": "1899-00", "start_year": 1899, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "t", "year_label": "1900-1", "start_year": 1900, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "u", "year_label": "1901-2", "start_year": 1901, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "w", "year_label": "1902-3", "start_year": 1902, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "JK", "start_year": 1903 }, "notes": "Jackson includes v (1902-3) and so places w-z one year later; Chaffers omits v." }, { "letter": "x", "year_label": "1903-4", "start_year": 1903, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "JK", "start_year": 1904 }, "notes": "Jackson includes v (1902-3) and so places w-z one year later; Chaffers omits v." }, { "letter": "y", "year_label": "1904-5", "start_year": 1904, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "JK", "start_year": 1905 }, "notes": "Jackson includes v (1902-3) and so places w-z one year later; Chaffers omits v." }, { "letter": "z", "year_label": "1905-6", "start_year": 1905, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "JK", "start_year": 1906 }, "notes": "Jackson includes v (1902-3) and so places w-z one year later; Chaffers omits v." } ] }, { "cycle_id": "EDI-10", "start_year": 1906, "end_year": 1923, "label": "1906-7 to 1923-4", "letter_style": "Roman capitals", "shield_shape": null, "omitted_letters": "J", "notes": "Chaffers: A 1906-7 to S 1923-4. Jackson: A 1907-8 to P 1921-2. We follow Chaffers (later edition, and it starts the new cycle immediately after z) but flag every letter.", "entries": [ { "letter": "A", "year_label": "1906-7", "start_year": 1906, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "JK", "start_year": 1907 }, "notes": "Jackson places this letter one year later." }, { "letter": "B", "year_label": "1907-8", "start_year": 1907, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "JK", "start_year": 1908 }, "notes": "Jackson places this letter one year later." }, { "letter": "C", "year_label": "1908-9", "start_year": 1908, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "JK", "start_year": 1909 }, "notes": "Jackson places this letter one year later." }, { "letter": "D", "year_label": "1909-10", "start_year": 1909, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "JK", "start_year": 1910 }, "notes": "Jackson places this letter one year later." }, { "letter": "E", "year_label": "1910-1", "start_year": 1910, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "JK", "start_year": 1911 }, "notes": "Jackson places this letter one year later." }, { "letter": "F", "year_label": "1911-2", "start_year": 1911, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "JK", "start_year": 1912 }, "notes": "Jackson places this letter one year later." }, { "letter": "G", "year_label": "1912-3", "start_year": 1912, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "JK", "start_year": 1913 }, "notes": "Jackson places this letter one year later." }, { "letter": "H", "year_label": "1913-4", "start_year": 1913, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "JK", "start_year": 1914 }, "notes": "Jackson places this letter one year later." }, { "letter": "I", "year_label": "1914-5", "start_year": 1914, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "JK", "start_year": 1915 }, "notes": "Jackson places this letter one year later." }, { "letter": "K", "year_label": "1915-6", "start_year": 1915, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "JK", "start_year": 1916 }, "notes": "Jackson places this letter one year later." }, { "letter": "L", "year_label": "1916-7", "start_year": 1916, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "JK", "start_year": 1917 }, "notes": "Jackson places this letter one year later." }, { "letter": "M", "year_label": "1917-8", "start_year": 1917, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "JK", "start_year": 1918 }, "notes": "Jackson places this letter one year later." }, { "letter": "N", "year_label": "1918-9", "start_year": 1918, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "JK", "start_year": 1919 }, "notes": "Jackson places this letter one year later." }, { "letter": "O", "year_label": "1919-20", "start_year": 1919, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "JK", "start_year": 1920 }, "notes": "Jackson places this letter one year later." }, { "letter": "P", "year_label": "1920-1", "start_year": 1920, "confidence": "low", "flags": [ "year_disputed" ], "sources": [ "CH", "JK" ], "alt": { "source": "JK", "start_year": 1921 }, "notes": "Jackson places this letter one year later." }, { "letter": "Q", "year_label": "1921-2", "start_year": 1921, "confidence": "low", "flags": [ "single_source" ], "sources": [ "CH" ], "notes": "Chaffers only (Jackson ends at P 1921-2); also inherits the one-year doubt over this cycle." }, { "letter": "R", "year_label": "1922-3", "start_year": 1922, "confidence": "low", "flags": [ "single_source" ], "sources": [ "CH" ], "notes": "Chaffers only (Jackson ends at P 1921-2); also inherits the one-year doubt over this cycle." }, { "letter": "S", "year_label": "1923-4", "start_year": 1923, "confidence": "low", "flags": [ "single_source" ], "sources": [ "CH" ], "notes": "Chaffers only (Jackson ends at P 1921-2); also inherits the one-year doubt over this cycle." } ] } ] }, { "office_id": "glasgow", "name": "Glasgow", "town_mark": "The city arms: a tree with a bird, a fish and a bell. With a lion rampant as the standard mark from 1819, and a thistle added from about 1914.", "years_active": "Dataset covers 1819-1923 (earlier irregular marks excluded; office later closed, 1964 per Edinburgh Assay Office archive, unverified in PD sources).", "letter_changeover": null, "cycles": [ { "cycle_id": "GLA-01", "start_year": 1819, "end_year": 1844, "label": "1819-20 to 1844-5", "letter_style": "Roman capitals", "shield_shape": null, "omitted_letters": "none (J used)", "notes": null, "entries": [ { "letter": "A", "year_label": "1819-20", "start_year": 1819, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "B", "year_label": "1820-1", "start_year": 1820, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "C", "year_label": "1821-2", "start_year": 1821, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "D", "year_label": "1822-3", "start_year": 1822, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "E", "year_label": "1823-4", "start_year": 1823, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "F", "year_label": "1824-5", "start_year": 1824, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "G", "year_label": "1825-6", "start_year": 1825, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "H", "year_label": "1826-7", "start_year": 1826, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "I", "year_label": "1827-8", "start_year": 1827, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "J", "year_label": "1828-9", "start_year": 1828, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "K", "year_label": "1829-30", "start_year": 1829, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "L", "year_label": "1830-1", "start_year": 1830, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "M", "year_label": "1831-2", "start_year": 1831, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "N", "year_label": "1832-3", "start_year": 1832, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "O", "year_label": "1833-4", "start_year": 1833, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "P", "year_label": "1834-5", "start_year": 1834, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Q", "year_label": "1835-6", "start_year": 1835, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "R", "year_label": "1836-7", "start_year": 1836, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "S", "year_label": "1837-8", "start_year": 1837, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "T", "year_label": "1838-9", "start_year": 1838, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "U", "year_label": "1839-40", "start_year": 1839, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "V", "year_label": "1840-1", "start_year": 1840, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "W", "year_label": "1841-2", "start_year": 1841, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "X", "year_label": "1842-3", "start_year": 1842, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Y", "year_label": "1843-4", "start_year": 1843, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Z", "year_label": "1844-5", "start_year": 1844, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "GLA-02", "start_year": 1845, "end_year": 1870, "label": "1845-6 to 1870-1", "letter_style": "black letter capitals", "shield_shape": null, "omitted_letters": "none (J used)", "notes": null, "entries": [ { "letter": "A", "year_label": "1845-6", "start_year": 1845, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "B", "year_label": "1846-7", "start_year": 1846, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "C", "year_label": "1847-8", "start_year": 1847, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "D", "year_label": "1848-9", "start_year": 1848, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "E", "year_label": "1849-50", "start_year": 1849, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "F", "year_label": "1850-1", "start_year": 1850, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "G", "year_label": "1851-2", "start_year": 1851, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "H", "year_label": "1852-3", "start_year": 1852, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "I", "year_label": "1853-4", "start_year": 1853, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "J", "year_label": "1854-5", "start_year": 1854, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "K", "year_label": "1855-6", "start_year": 1855, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "L", "year_label": "1856-7", "start_year": 1856, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "M", "year_label": "1857-8", "start_year": 1857, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "N", "year_label": "1858-9", "start_year": 1858, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "O", "year_label": "1859-60", "start_year": 1859, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "P", "year_label": "1860-1", "start_year": 1860, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Q", "year_label": "1861-2", "start_year": 1861, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "R", "year_label": "1862-3", "start_year": 1862, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "S", "year_label": "1863-4", "start_year": 1863, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "T", "year_label": "1864-5", "start_year": 1864, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "U", "year_label": "1865-6", "start_year": 1865, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "V", "year_label": "1866-7", "start_year": 1866, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "W", "year_label": "1867-8", "start_year": 1867, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "X", "year_label": "1868-9", "start_year": 1868, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Y", "year_label": "1869-70", "start_year": 1869, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Z", "year_label": "1870-1", "start_year": 1870, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "GLA-03", "start_year": 1871, "end_year": 1896, "label": "1871-2 to 1896-7", "letter_style": "\"Egyptian\" (slab-serif) capitals", "shield_shape": null, "omitted_letters": "none (J used)", "notes": null, "entries": [ { "letter": "A", "year_label": "1871-2", "start_year": 1871, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "B", "year_label": "1872-3", "start_year": 1872, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "C", "year_label": "1873-4", "start_year": 1873, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "D", "year_label": "1874-5", "start_year": 1874, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "E", "year_label": "1875-6", "start_year": 1875, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "F", "year_label": "1876-7", "start_year": 1876, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "G", "year_label": "1877-8", "start_year": 1877, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "H", "year_label": "1878-9", "start_year": 1878, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "I", "year_label": "1879-80", "start_year": 1879, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "J", "year_label": "1880-1", "start_year": 1880, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "K", "year_label": "1881-2", "start_year": 1881, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "L", "year_label": "1882-3", "start_year": 1882, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "M", "year_label": "1883-4", "start_year": 1883, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "N", "year_label": "1884-5", "start_year": 1884, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "O", "year_label": "1885-6", "start_year": 1885, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "P", "year_label": "1886-7", "start_year": 1886, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Q", "year_label": "1887-8", "start_year": 1887, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "R", "year_label": "1888-9", "start_year": 1888, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "S", "year_label": "1889-90", "start_year": 1889, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "T", "year_label": "1890-1", "start_year": 1890, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "U", "year_label": "1891-2", "start_year": 1891, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "V", "year_label": "1892-3", "start_year": 1892, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "W", "year_label": "1893-4", "start_year": 1893, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "X", "year_label": "1894-5", "start_year": 1894, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Y", "year_label": "1895-6", "start_year": 1895, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Z", "year_label": "1896-7", "start_year": 1896, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "GLA-04", "start_year": 1897, "end_year": 1922, "label": "1897-8 to 1922-3", "letter_style": "script capitals", "shield_shape": null, "omitted_letters": "none (J used)", "notes": "Jackson ends at Y 1921-2; Z from Chaffers only.", "entries": [ { "letter": "A", "year_label": "1897-8", "start_year": 1897, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "B", "year_label": "1898-9", "start_year": 1898, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "C", "year_label": "1899-00", "start_year": 1899, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "D", "year_label": "1900-1", "start_year": 1900, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "E", "year_label": "1901-2", "start_year": 1901, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "F", "year_label": "1902-3", "start_year": 1902, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "G", "year_label": "1903-4", "start_year": 1903, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "H", "year_label": "1904-5", "start_year": 1904, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "I", "year_label": "1905-6", "start_year": 1905, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "J", "year_label": "1906-7", "start_year": 1906, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "K", "year_label": "1907-8", "start_year": 1907, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "L", "year_label": "1908-9", "start_year": 1908, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "M", "year_label": "1909-10", "start_year": 1909, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "N", "year_label": "1910-1", "start_year": 1910, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "O", "year_label": "1911-2", "start_year": 1911, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "P", "year_label": "1912-3", "start_year": 1912, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Q", "year_label": "1913-4", "start_year": 1913, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "R", "year_label": "1914-5", "start_year": 1914, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "S", "year_label": "1915-6", "start_year": 1915, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "T", "year_label": "1916-7", "start_year": 1916, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "U", "year_label": "1917-8", "start_year": 1917, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "V", "year_label": "1918-9", "start_year": 1918, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "W", "year_label": "1919-20", "start_year": 1919, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "X", "year_label": "1920-1", "start_year": 1920, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Y", "year_label": "1921-2", "start_year": 1921, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Z", "year_label": "1922-3", "start_year": 1922, "confidence": "medium", "flags": [ "single_source" ], "sources": [ "CH" ] } ] }, { "cycle_id": "GLA-05", "start_year": 1923, "end_year": 1923, "label": "1923-4 to 1923-4", "letter_style": null, "shield_shape": null, "omitted_letters": null, "notes": "Only the first letter is in our sources. Style not stated legibly.", "entries": [ { "letter": "a", "year_label": "1923-4", "start_year": 1923, "confidence": "medium", "flags": [ "single_source" ], "sources": [ "CH" ] } ] } ] }, { "office_id": "dublin", "name": "Dublin (Ireland)", "town_mark": "A crowned harp (the standard mark) together with the figure of Hibernia, first added in 1730 as a duty mark and later treated as the Dublin hallmark.", "years_active": "Dataset covers 1821-1923 only (1638-1820 excluded: the two sources disagree).", "letter_changeover": "June from 1846 (Jackson); the 1821 cycle started in January.", "cycles": [ { "cycle_id": "DUB-09", "start_year": 1821, "end_year": 1845, "label": "1821-2 to 1845-6", "letter_style": "Roman capitals", "shield_shape": null, "omitted_letters": "J", "notes": "Jackson: cycle ran January 1821 to June 1846 and labels the first four letters 1821, 1822, 1823, 1824. Chaffers labels them 1821-2 etc. Same letters and start years.", "entries": [ { "letter": "A", "year_label": "1821-2", "start_year": 1821, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "B", "year_label": "1822-3", "start_year": 1822, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "C", "year_label": "1823-4", "start_year": 1823, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "D", "year_label": "1824-5", "start_year": 1824, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "E", "year_label": "1825-6", "start_year": 1825, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "F", "year_label": "1826-7", "start_year": 1826, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "G", "year_label": "1827-8", "start_year": 1827, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "H", "year_label": "1828-9", "start_year": 1828, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "I", "year_label": "1829-30", "start_year": 1829, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "K", "year_label": "1830-1", "start_year": 1830, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "L", "year_label": "1831-2", "start_year": 1831, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "M", "year_label": "1832-3", "start_year": 1832, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "N", "year_label": "1833-4", "start_year": 1833, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "O", "year_label": "1834-5", "start_year": 1834, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "P", "year_label": "1835-6", "start_year": 1835, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Q", "year_label": "1836-7", "start_year": 1836, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "R", "year_label": "1837-8", "start_year": 1837, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "S", "year_label": "1838-9", "start_year": 1838, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "T", "year_label": "1839-40", "start_year": 1839, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "U", "year_label": "1840-1", "start_year": 1840, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "V", "year_label": "1841-2", "start_year": 1841, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "W", "year_label": "1842-3", "start_year": 1842, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "X", "year_label": "1843-4", "start_year": 1843, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Y", "year_label": "1844-5", "start_year": 1844, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Z", "year_label": "1845-6", "start_year": 1845, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "DUB-10", "start_year": 1846, "end_year": 1870, "label": "1846-7 to 1870-1", "letter_style": "Roman small", "shield_shape": null, "omitted_letters": "j", "notes": null, "entries": [ { "letter": "a", "year_label": "1846-7", "start_year": 1846, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "b", "year_label": "1847-8", "start_year": 1847, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "c", "year_label": "1848-9", "start_year": 1848, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "d", "year_label": "1849-50", "start_year": 1849, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "e", "year_label": "1850-1", "start_year": 1850, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "f", "year_label": "1851-2", "start_year": 1851, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "g", "year_label": "1852-3", "start_year": 1852, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "h", "year_label": "1853-4", "start_year": 1853, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "i", "year_label": "1854-5", "start_year": 1854, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "k", "year_label": "1855-6", "start_year": 1855, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "l", "year_label": "1856-7", "start_year": 1856, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "m", "year_label": "1857-8", "start_year": 1857, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "n", "year_label": "1858-9", "start_year": 1858, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "o", "year_label": "1859-60", "start_year": 1859, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "p", "year_label": "1860-1", "start_year": 1860, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "q", "year_label": "1861-2", "start_year": 1861, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "r", "year_label": "1862-3", "start_year": 1862, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "s", "year_label": "1863-4", "start_year": 1863, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "t", "year_label": "1864-5", "start_year": 1864, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "u", "year_label": "1865-6", "start_year": 1865, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "v", "year_label": "1866-7", "start_year": 1866, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "w", "year_label": "1867-8", "start_year": 1867, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "x", "year_label": "1868-9", "start_year": 1868, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "y", "year_label": "1869-70", "start_year": 1869, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "z", "year_label": "1870-1", "start_year": 1870, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "DUB-11", "start_year": 1871, "end_year": 1895, "label": "1871-2 to 1895-6", "letter_style": "Roman capitals", "shield_shape": null, "omitted_letters": "J", "notes": null, "entries": [ { "letter": "A", "year_label": "1871-2", "start_year": 1871, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "B", "year_label": "1872-3", "start_year": 1872, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "C", "year_label": "1873-4", "start_year": 1873, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "D", "year_label": "1874-5", "start_year": 1874, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "E", "year_label": "1875-6", "start_year": 1875, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "F", "year_label": "1876-7", "start_year": 1876, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "G", "year_label": "1877-8", "start_year": 1877, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "H", "year_label": "1878-9", "start_year": 1878, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "I", "year_label": "1879-80", "start_year": 1879, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "K", "year_label": "1880-1", "start_year": 1880, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "L", "year_label": "1881-2", "start_year": 1881, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "M", "year_label": "1882-3", "start_year": 1882, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "N", "year_label": "1883-4", "start_year": 1883, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "O", "year_label": "1884-5", "start_year": 1884, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "P", "year_label": "1885-6", "start_year": 1885, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Q", "year_label": "1886-7", "start_year": 1886, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "R", "year_label": "1887-8", "start_year": 1887, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "S", "year_label": "1888-9", "start_year": 1888, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "T", "year_label": "1889-90", "start_year": 1889, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "U", "year_label": "1890-1", "start_year": 1890, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "V", "year_label": "1891-2", "start_year": 1891, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "W", "year_label": "1892-3", "start_year": 1892, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "X", "year_label": "1893-4", "start_year": 1893, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Y", "year_label": "1894-5", "start_year": 1894, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Z", "year_label": "1895-6", "start_year": 1895, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "DUB-12", "start_year": 1896, "end_year": 1915, "label": "1896-7 to 1915-6", "letter_style": "black letter capitals", "shield_shape": null, "omitted_letters": "J", "notes": null, "entries": [ { "letter": "A", "year_label": "1896-7", "start_year": 1896, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "B", "year_label": "1897-8", "start_year": 1897, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "C", "year_label": "1898-9", "start_year": 1898, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "D", "year_label": "1899-00", "start_year": 1899, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "E", "year_label": "1900-1", "start_year": 1900, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "F", "year_label": "1901-2", "start_year": 1901, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "G", "year_label": "1902-3", "start_year": 1902, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "H", "year_label": "1903-4", "start_year": 1903, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "I", "year_label": "1904-5", "start_year": 1904, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "K", "year_label": "1905-6", "start_year": 1905, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "L", "year_label": "1906-7", "start_year": 1906, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "M", "year_label": "1907-8", "start_year": 1907, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "N", "year_label": "1908-9", "start_year": 1908, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "O", "year_label": "1909-10", "start_year": 1909, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "P", "year_label": "1910-1", "start_year": 1910, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "Q", "year_label": "1911-2", "start_year": 1911, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "R", "year_label": "1912-3", "start_year": 1912, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "S", "year_label": "1913-4", "start_year": 1913, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "T", "year_label": "1914-5", "start_year": 1914, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "U", "year_label": "1915-6", "start_year": 1915, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] } ] }, { "cycle_id": "DUB-13", "start_year": 1916, "end_year": 1923, "label": "1916-7 to 1923-4", "letter_style": "Gaelic (uncial-style) letters", "shield_shape": null, "omitted_letters": null, "notes": "Jackson ends at e 1920-1; f, g, h Chaffers only.", "entries": [ { "letter": "a", "year_label": "1916-7", "start_year": 1916, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "b", "year_label": "1917-8", "start_year": 1917, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "c", "year_label": "1918-9", "start_year": 1918, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "d", "year_label": "1919-20", "start_year": 1919, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "e", "year_label": "1920-1", "start_year": 1920, "confidence": "high", "flags": [], "sources": [ "CH", "JK" ] }, { "letter": "f", "year_label": "1921-2", "start_year": 1921, "confidence": "medium", "flags": [ "single_source" ], "sources": [ "CH" ] }, { "letter": "g", "year_label": "1922-3", "start_year": 1922, "confidence": "medium", "flags": [ "single_source" ], "sources": [ "CH" ] }, { "letter": "h", "year_label": "1923-4", "start_year": 1923, "confidence": "medium", "flags": [ "single_source" ], "sources": [ "CH" ] } ] } ] }, { "office_id": "uk_all_offices_1975", "name": "All UK assay offices (from 1975)", "town_mark": "Each office keeps its own town mark; only the date letter is shared.", "years_active": "1975-present", "letter_changeover": "1 January", "cycles": [ { "cycle_id": "UK-1975", "start_year": 1975, "end_year": 1999, "label": "1975 to 1999", "letter_style": null, "shield_shape": null, "omitted_letters": "one of I/J (see flag on 1983)", "notes": "Same letter at all UK assay offices from 1975, changing on 1 January. Typeface and shield not described in our sources.", "entries": [ { "letter": "A", "year_label": "1975", "start_year": 1975, "confidence": "medium", "flags": [ "official_source_only" ], "sources": [ "OFF" ] }, { "letter": "B", "year_label": "1976", "start_year": 1976, "confidence": "medium", "flags": [ "official_source_only" ], "sources": [ "OFF" ] }, { "letter": "C", "year_label": "1977", "start_year": 1977, "confidence": "medium", "flags": [ "official_source_only" ], "sources": [ "OFF" ] }, { "letter": "D", "year_label": "1978", "start_year": 1978, "confidence": "medium", "flags": [ "official_source_only" ], "sources": [ "OFF" ] }, { "letter": "E", "year_label": "1979", "start_year": 1979, "confidence": "medium", "flags": [ "official_source_only" ], "sources": [ "OFF" ] }, { "letter": "F", "year_label": "1980", "start_year": 1980, "confidence": "medium", "flags": [ "official_source_only" ], "sources": [ "OFF" ] }, { "letter": "G", "year_label": "1981", "start_year": 1981, "confidence": "medium", "flags": [ "official_source_only" ], "sources": [ "OFF" ] }, { "letter": "H", "year_label": "1982", "start_year": 1982, "confidence": "medium", "flags": [ "official_source_only" ], "sources": [ "OFF" ] }, { "letter": "J", "year_label": "1983", "start_year": 1983, "confidence": "low", "flags": [ "letter_form_disputed", "official_source_only" ], "sources": [ "OFF" ], "alt_letters": [ "I" ], "notes": "Birmingham Assay Office's chart reads 1983 as J; other references read it as I. Unresolved." }, { "letter": "K", "year_label": "1984", "start_year": 1984, "confidence": "medium", "flags": [ "official_source_only" ], "sources": [ "OFF" ] }, { "letter": "L", "year_label": "1985", "start_year": 1985, "confidence": "medium", "flags": [ "official_source_only" ], "sources": [ "OFF" ] }, { "letter": "M", "year_label": "1986", "start_year": 1986, "confidence": "medium", "flags": [ "official_source_only" ], "sources": [ "OFF" ] }, { "letter": "N", "year_label": "1987", "start_year": 1987, "confidence": "medium", "flags": [ "official_source_only" ], "sources": [ "OFF" ] }, { "letter": "O", "year_label": "1988", "start_year": 1988, "confidence": "medium", "flags": [ "official_source_only" ], "sources": [ "OFF" ] }, { "letter": "P", "year_label": "1989", "start_year": 1989, "confidence": "medium", "flags": [ "official_source_only" ], "sources": [ "OFF" ] }, { "letter": "Q", "year_label": "1990", "start_year": 1990, "confidence": "medium", "flags": [ "official_source_only" ], "sources": [ "OFF" ] }, { "letter": "R", "year_label": "1991", "start_year": 1991, "confidence": "medium", "flags": [ "official_source_only" ], "sources": [ "OFF" ] }, { "letter": "S", "year_label": "1992", "start_year": 1992, "confidence": "medium", "flags": [ "official_source_only" ], "sources": [ "OFF" ] }, { "letter": "T", "year_label": "1993", "start_year": 1993, "confidence": "medium", "flags": [ "official_source_only" ], "sources": [ "OFF" ] }, { "letter": "U", "year_label": "1994", "start_year": 1994, "confidence": "medium", "flags": [ "official_source_only" ], "sources": [ "OFF" ] }, { "letter": "V", "year_label": "1995", "start_year": 1995, "confidence": "medium", "flags": [ "official_source_only" ], "sources": [ "OFF" ] }, { "letter": "W", "year_label": "1996", "start_year": 1996, "confidence": "medium", "flags": [ "official_source_only" ], "sources": [ "OFF" ] }, { "letter": "X", "year_label": "1997", "start_year": 1997, "confidence": "medium", "flags": [ "official_source_only" ], "sources": [ "OFF" ] }, { "letter": "Y", "year_label": "1998", "start_year": 1998, "confidence": "medium", "flags": [ "official_source_only" ], "sources": [ "OFF" ] }, { "letter": "Z", "year_label": "1999", "start_year": 1999, "confidence": "medium", "flags": [ "official_source_only" ], "sources": [ "OFF" ] } ] }, { "cycle_id": "UK-2000", "start_year": 2000, "end_year": 2024, "label": "2000 to 2024", "letter_style": null, "shield_shape": null, "omitted_letters": "i (j used, 2008)", "notes": "Lower-case series. Goldsmiths' Company confirms 2024 = z. Birmingham Assay Office lists 2008 = j. Sheffield Assay Office says both i and j were left out of this set, which would not fit 25 years; treated as a wording slip.", "entries": [ { "letter": "a", "year_label": "2000", "start_year": 2000, "confidence": "medium", "flags": [ "official_source_only" ], "sources": [ "OFF" ] }, { "letter": "b", "year_label": "2001", "start_year": 2001, "confidence": "medium", "flags": [ "official_source_only" ], "sources": [ "OFF" ] }, { "letter": "c", "year_label": "2002", "start_year": 2002, "confidence": "medium", "flags": [ "official_source_only" ], "sources": [ "OFF" ] }, { "letter": "d", "year_label": "2003", "start_year": 2003, "confidence": "medium", "flags": [ "official_source_only" ], "sources": [ "OFF" ] }, { "letter": "e", "year_label": "2004", "start_year": 2004, "confidence": "medium", "flags": [ "official_source_only" ], "sources": [ "OFF" ] }, { "letter": "f", "year_label": "2005", "start_year": 2005, "confidence": "medium", "flags": [ "official_source_only" ], "sources": [ "OFF" ] }, { "letter": "g", "year_label": "2006", "start_year": 2006, "confidence": "medium", "flags": [ "official_source_only" ], "sources": [ "OFF" ] }, { "letter": "h", "year_label": "2007", "start_year": 2007, "confidence": "medium", "flags": [ "official_source_only" ], "sources": [ "OFF" ] }, { "letter": "j", "year_label": "2008", "start_year": 2008, "confidence": "medium", "flags": [ "official_source_only" ], "sources": [ "OFF" ] }, { "letter": "k", "year_label": "2009", "start_year": 2009, "confidence": "medium", "flags": [ "official_source_only" ], "sources": [ "OFF" ] }, { "letter": "l", "year_label": "2010", "start_year": 2010, "confidence": "medium", "flags": [ "official_source_only" ], "sources": [ "OFF" ] }, { "letter": "m", "year_label": "2011", "start_year": 2011, "confidence": "medium", "flags": [ "official_source_only" ], "sources": [ "OFF" ] }, { "letter": "n", "year_label": "2012", "start_year": 2012, "confidence": "medium", "flags": [ "official_source_only" ], "sources": [ "OFF" ] }, { "letter": "o", "year_label": "2013", "start_year": 2013, "confidence": "medium", "flags": [ "official_source_only" ], "sources": [ "OFF" ] }, { "letter": "p", "year_label": "2014", "start_year": 2014, "confidence": "medium", "flags": [ "official_source_only" ], "sources": [ "OFF" ] }, { "letter": "q", "year_label": "2015", "start_year": 2015, "confidence": "medium", "flags": [ "official_source_only" ], "sources": [ "OFF" ] }, { "letter": "r", "year_label": "2016", "start_year": 2016, "confidence": "medium", "flags": [ "official_source_only" ], "sources": [ "OFF" ] }, { "letter": "s", "year_label": "2017", "start_year": 2017, "confidence": "medium", "flags": [ "official_source_only" ], "sources": [ "OFF" ] }, { "letter": "t", "year_label": "2018", "start_year": 2018, "confidence": "medium", "flags": [ "official_source_only" ], "sources": [ "OFF" ] }, { "letter": "u", "year_label": "2019", "start_year": 2019, "confidence": "medium", "flags": [ "official_source_only" ], "sources": [ "OFF" ] }, { "letter": "v", "year_label": "2020", "start_year": 2020, "confidence": "medium", "flags": [ "official_source_only" ], "sources": [ "OFF" ] }, { "letter": "w", "year_label": "2021", "start_year": 2021, "confidence": "medium", "flags": [ "official_source_only" ], "sources": [ "OFF" ] }, { "letter": "x", "year_label": "2022", "start_year": 2022, "confidence": "medium", "flags": [ "official_source_only" ], "sources": [ "OFF" ] }, { "letter": "y", "year_label": "2023", "start_year": 2023, "confidence": "medium", "flags": [ "official_source_only" ], "sources": [ "OFF" ] }, { "letter": "z", "year_label": "2024", "start_year": 2024, "confidence": "medium", "flags": [ "official_source_only" ], "sources": [ "OFF" ] } ] }, { "cycle_id": "UK-2025", "start_year": 2025, "end_year": 2026, "label": "2025 to 2026", "letter_style": null, "shield_shape": null, "omitted_letters": null, "notes": "New capital series from January 2025. Only 2025 and 2026 included.", "entries": [ { "letter": "A", "year_label": "2025", "start_year": 2025, "confidence": "medium", "flags": [ "official_source_only" ], "sources": [ "OFF" ] }, { "letter": "B", "year_label": "2026", "start_year": 2026, "confidence": "medium", "flags": [ "official_source_only" ], "sources": [ "OFF" ] } ] } ] } ] }