Claymo Master Okreblo Gustave Magnus - Leningrad - initials of G.M.O.

Okerblom Gustav Magnus (Akerblom Gustav Magnus) (r. 1808 in Petersburg, mind in 1872), son of the silver case of Master Johann Heinrich Okerblom, in 1835 hours of the cerebral silver shop, 1839 g. Alderman. There's a G.M.O.'s initials on the master's label, after every letter, there's a point. Paper: cheque milk, spoons, GIM. Metal: silver