
Hallmarks

Jewelry Workshop "Yukhendus" - "Yu0" - …

Sidorovskaya Jewelry Factory - "FS2" - …

Sidorovskaya Jewelry Factory - "FS5" - …

Sinkovskaya Jewelry and Art Factory - "…

Artel "Sinkovsky Jeweler" - "S0" - 1960

Moscow Special Alloys Processing Plant …

Sinkovskaya Jewelry and Art Factory - "…

Artel "Yukhendus" - "Yu8" - 1958

Special Alloys Processing Plant - "Z₂S"…

Special Alloys Processing Plant - "Z₃S"…