English Registry Marks

The diamond-shaped English Registry mark, was used by the English patent office since 1842 to identify pieces of English pottery, porcelain, and other products. It is easy to tell when the ceramic was made. The mark has the Roman numerals “IV” at the top of the mark if it is for a ceramic. Between 1842 and 1883, the diamond-shaped mark was used. Marks registered from 1842 to 1867 have a letter at the top of the diamond. Marks registered from 1867 to 1883 have a number instead of a letter at the top of the diamond. After 1883, the diamond shape was discontinued and “Rd. No.,” followed by the number assigned to the ceramic, was used. Tables listed here tell how to decode the mark to learn the type of material, month, maker, and year of manufacture.