Sheffield Date Letters on Silver      1773 - 1916

The shape of the shield cartouche around the City Mark and Standard Mark generally
change to match the shield around the Date Letter Mark.
Sheffield Import Marks on Foreign Made Silver      1867 - Present

The "F" was used, 1867 - 1904, in conjunction with a full set of Sheffield marks. The second mark was used from 1906.

(note) : In 1975 Sheffield changed its city mark to a Tudor Rose, as shown above.

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