Aircraft Clock, Elapsed Time USAF USN MS28020LI Fairey Battle So it is possible that

So it is possible that there is some connection there

Air Corps US Army Type C-13 (also AN-5760-1)

along with the symbols of the Soviet army and the manufacturer

this instrument was part of the Siemens K 4ü course control system

25in diameter and 4in deep

Aircraft Clock, Elapsed Time USAF USN MS28020LI Fairey Battle So it is possible thatThis is an original Cold War era Elapsed Time Clock, made for US military aircraft applications by Elgin (MS28020LI), and as used in aircraft carrier based Grumman Cougar F9F 5 and North American Fury FJ2 Jet Fighters. See photo of the cockpit of the F9F 5 from its flight manual dated 1955, showing the location of the clock. The clock winds and keeps time a few minutes. Has not been examined for accuracy or full functionality. The dial is 1 7 8 inches