
Hallmarks

Moscow Watch Repair Plant "Mosremchas" …

Metalware Plant No. 1 - "M12" - 1962

Metalware Plant No. 1 - "M10" - 1960

Metalware Plant No. 1 - "M14" - 1964

Moscow Jewelry Factory - "Yu-3" - 1963

Melchior Products Factory - "M₆3" - 1956

Metalware Plant No. 1 - "M11" - 1961

Special Alloys Processing Plant - "Z₁S"…

Metalware Plant No. 1 - "M15" - 1965

Special Alloys Processing Plant - "Z₃S"…