Sometimes called the Sterling Mark, the lion passant, the mark for Made in England, first appeared on English silver and gold in 1544.
For two years it was crowned, but has been struck ever since in its present form by all English Assay Offices.
This mark became crowned in 1478 and remained crowned until 1821.
Used from the inception of the Sheffield Assay Office in 1773 , the Crown was the town mark of Sheffield.
Because of possible confusion with the Crown mark used after 1798, (as the hallmark for 18ct gold), the Sheffield assay mark was changed on January 1st 1975 for a rose.