Claymo Master Iiraxinen Peter - Leningrad - initials "PA"

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

ΨSMoscow annual brand - 1706.

ИАХClaymo of an unknown master, the initials of the IAA, the end of 19 - the beginning of the 20th century

CYClaymo of an unknown master of Kiev, the initials of CY, the middle of the 18th century

ALClaymo Master Lydikine Aron - Leningrad - initials AL - 1849-1881.

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