This article was originally published in Antique Trader
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English ceramics produced during the Aesthetic Period are marked by a system denoting the approximate date a pattern or decoration was registered. This ‘registry mark’ is the equivalent of the American patent numbering system.
Diamond-shaped marks were used until 1883 and are coded with numbers and letters indicating the type of material (all ceramics are classified number VI), parcel number of the piece and, most helpful, the day, month and year of registry. This mark was also used on wood, metal and glasswares.
Two slightly different diamond patterns were used during the 1860-1900 Aesthetic Period. After 1884, the diamond mark was discontinued, and instead, just a registration number was printed on pieces.
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- Registration Code
for Month of the Year
C or O-January
- Registration marks
Registry Numbers (1884-1900)