ACHS 1M Military Stopwatch Air Force Clock Cockpit USSR 5 Days Flight Rare CHCHThere are factory seals behind the screws of the case. The watch was not opened. A genuine mechanical cockpit clock ACHS-1M from the USSR produced at "Chelyabinsk Watch Plant" ("CHCHZ"). Such clocks were copied from the Swiss aviation chronograph by Jaeger-LeCoultre in the late 30s of the 20th century.stopwatch (bottom dial)weight: 420 g25 jewels mechanism countdowns the flight time (upper di...al) (here "flight time" is written)the flight time mechanism and stopwatch are turned on and off using the right crownclock winding is carried out by rotating the left crown counterclockwise to failureIt is fully mechanical.Cosmetic condition: see photosShipping – 15 $(worldwide) 9-21 daysSend the next day after payment. Send the track code. I combine items, so you can save on shipping by ordering two or more lots. Items are well packed. Payment via PayPal. I'm glad that you are interested in lots that I sell. Wish you a good shopping.