"Mir"(in English "Peace") Russian Soviet rangefinder camera "Industar-50" lens, was produced by the Krasnogorsk Mechanical Plant from 1959 to 1961. Specification: Film: 35mm Frame size: 24 x 36 mm .Shutter speed: from 1/500 to 1/30,B. Lens: Industar-50 f3.5/50. Focusing range, m: from 1 to oo. Serial #5984768.