
Hallmarks

Moscow Jewelry Plant - "MYu35" - 1965

Metalware Plant No. 1 - "M12" - 1962

Metalware Plant No. 1 - "M10" - 1960

Metalware Plant No. 1 - "M13" - 1963

Moscow Watch Repair Plant "Mosremchas" …

Bronnitsky Jewelry Factory - "B5" - 1965

Metalware Plant No. 1 - "M14" - 1964

Moscow Jewelry Factory - "Yu-5" - 1965

Metalware Plant No. 1 - "M11" - 1961

Special Alloys Processing Plant - "Z₁S"…