The stigma of the master Stabenau Yakov - Riga - the initials "I.SJ" - 1712-1724.
Similar hallmarks
IGBClaymo Master Eben Johann Georg - Riga - initials of the IGB
J-HClaymo Master Hainon Johan - Leningrad - initials J-H
FFClaymo Master Fresen Frederick Ahatez - Leningrad - initials FF.
ДIClaymo Master Ivanov Dmitri - Moscow - initials DI - 1739-1762.
СДClaymo Master Dementiev Semen - Moscow - initials of SD 1820-1861.
ASClaymo of an unknown master of Kiev - initials of the "AS" - 1738.