Air Force of the Soviet Union 4th quarter of 1948. The movie photo watch of the machine gun was used on Mig 15 Mig 17 aircraft. The photo machine gun was launched together with the main gun of the aircraft during the fire and conducted a film-photo of the air battle. This clock was needed to record the time in the frame during the filming. The condition is normal as for 1948, fully working. There are a lot of scratches on the case and glass, small enamel cracks on the dial. See the condition of the dimensions in the photo.