1836 to 1855
From 1837 the head of Queen Victoria appears as a Duty Mark, and till 1875 the leopard’s head, still uncrowned, is of a different form (see Table, [page 357]).
1856 to 1875
In this period the shape of the shield for the date letter, which had remained the same since 1756, was now for the last time used. Its new shape is shown in the following period.
1876 to 1895
The shape of the date shield was changed with the letter B in 1877. In 1876, with the letter A, the shield of the leopard’s head was changed, and the face became more feline with whiskers (see Table, [page 357]). In 1876 another new mark was added, the letter F, in an oval escutcheon, which was compulsory by law to be stamped on all foreign silver assayed at any office in the United Kingdom.