
Hallmarks

Leningrad Jewelry and Watch Factory - "…

Leningrad Jewelry and Watch Factory - "…

Sverdlovsk Jewelry and Lapidary Factory…

Baku Jewelry Factory - "BYu7" - 1967

Sverdlovsk Jewelry and Lapidary Factory…

Baku Jewelry Factory - "BYu6" - 1966

Moscow Jewelry Factory - "MYu0" - 1960

Kyiv Jewelry Factory - "KYu4" - 1964

Moscow Jewelry Factory - "MYu2" - 1962

Moscow Jewelry Factory - "MYu31" - 1961