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 - 0386279

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.