This very interesting camera Was developed in Hungary around 1956/1958 , by MOM - Magyar Optikai Müvek . It is a direct descendant of the original Zenit camera ,. Uses Standard M42x1 threaded lenses pro-set types and has fixed pentaprism . Speeds 1/30 to 1/500 +B. in focal plane shutter .Knob film advance.
Historian Zòltan Féjer