
Hallmarks

Moscow Jewelry Plant - "MYu35" - 1965

Moscow Jewelry Plant - "MYu34" - 1964

Metalware Plant No. 1 - "M10" - 1960

Moscow Special Alloys Processing Plant …

Moscow Watch Repair Plant "Mosremchas" …

Moscow Jewelry Factory - "Yu-5" - 1965

Special Alloys Processing Plant - "Z₁S"…

Metalware Plant No. 1 - "M15" - 1965

Special Alloys Processing Plant - "Z₂S"…

Special Alloys Processing Plant - "Z₃S"…