
Hallmarks

Jewelry Workshop "Yukhendus" - "Yu0" - …

Sidorovskaya Jewelry Factory - "FS5" - …

Tbilisi Jewelry Factory - "TYu1" - 1961

Sidorovskaya Jewelry Factory - "FS1" - …

Artel "Sinkovsky Jeweler" - "S0" - 1960

Souvenir and Art Factory - "Yu1" - 1961

Special Alloys Processing Plant - "Z₁S"…

Artel "Yukhendus" - "Yu8" - 1958

Moscow Jewelry Factory - "Yu6" - 1966

Special Alloys Processing Plant - "Z₃S"…