Claymo Master Costamo Georg - Leningrad - initials of GK

GVThe stigma of the master Vendt Georg - Riga - the initials "GV" - 1777-1786.

ЯСClaymo Master of the Forty Yakov Nikolayev, with the red initials of the YAS, 1898.

G.S.Claymo Master Simonsson Karl Gustave - Leningrad - initials "G.S."

СРClaymo of an unknown master of Moscow - initials of RS - 1834.

S-WClaymo Master Vekeva Stefan - Leningrad - S-W initials

А.ФClaymo Master Fuld Alexander Yosipović - Moscow - initials A.F. - 1862-1917.