Assay Master's Mark of Veliky Ustyug - Mikhail Gavrilov Okonishnikov - initials "M-O" - 1755-1775

Hallmarks-Assay Masters

Letter: M-O
Year: 1755-1775
Shape: Square
Description: Assay master's mark of Mikhail Gavrilov Okonishnikov depicting the initials "M" and "O" with a dot between the letters, also signed with the year "1755". The master was born in 1722 and was the first assay master of the city of Veliky Ustyug (1755-1775). Shape: Square