SLAVA Soviet vintage stopwatch mechanical chronometer chronograph antique USSR  watch

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Operating temperature range, ° С -20 ... + 40
Overall dimensions (no more) 
diameter 65 mm
diameter with crown 82 mm
case width 25 mm
Weight, kg 0.250
The mechanism of the shock assembly
serial number 255935

The stopwatch is in working order.
Served by a master.
Made in USSR.
Original Soivet stopwatch, not fake.
There are some signs of use - see photos.