
Hallmarks

Baku Jewelry and Watch Factory - "BYu5"…

Leningrad Jewelry and Watch Factory - "…

Sverdlovsk Plant "Russian Gemstones" - …

Jewelry Workshop of the Volgograd Watch…

Leningrad Jewelry and Watch Factory - "…

Baku Jewelry Factory - "BYu7" - 1967

Sverdlovsk Jewelry and Lapidary Factory…

Kyiv Jewelry Factory - "KYu4" - 1964

Yerevan Jewelry Plant - "EYu5" - 1965

Kyiv Jewelry Factory - "KYu3" - 1963