Sturmanskie Poljot chronograph watch, vintage, original issue.

Mid-80s model. Stainless steel caseand hacking feature indicate that it is early model, not a civilian reissue.

Calibre: 31659

Manual wind

Bph: 21,600

Power reserve: 42 hours

23 Jewels

Hacking/flyback feature.

Soviet Air Force Sturmanskie ('Navigator') 31681 issued in ca. 1986-87 The calibre 31659 is a modified Valjoux 7734. Hack/flyback feature.

All functions  are working properly. Keeping good time, -4 seconds. Beat error 1.1. Amplitude 210.