Master's Mark of Ol'sonius Iogann Ferdinand - Leningrad - initials "J.O"

Hallmarks-Masters

Letter: J.O
Year: 1823
Shape: Circle
Description: Ol'sonius Iogann Ferdinand (Olsonius Johan Ferdinand) (born 1823 in Finland, died 1888), studied in St. Petersburg, where he was an apprentice in 1842, a master in 1852, a jeweler, worked for the Grachev firm. The master's mark features the initials "J.O", with a period after the letter J. Shape: Circle