The case is reported to be 31mm, the same size as a Moskva, which never came with a screw-back to my knowledge. Also check out the shock protection with the missing regulating lever on a 1955 movement! Franken, or ultra rare never seen before case/movement combination? I think at best it is a...

Since the Soviet union had an air force of some kind:roll: and the worlds 2nd or 3d largest watch industry I have to post my beloved ones: A Sturmanskie, 40th anniversary since Gagarins flight into space and an early 3133 Soviet Sturmanskie chrono. I searched your forum and found one post, my...