Case is in very good condition with touch of nickel silver showing through on the center of back. This unit is supplied with the seldom found original metal carrying case, also with full military markings, designed to isolate the watch from magnetic fields and aircraft vibrations. The case is in very good condition. Military nomenclature on back. Dial and movement are excellent.
Case is in very good condition with slight some nickel silver showing through on the back.
These timepieces were used by the navigator and pilot as the airplane's master time source during World War II and thereafter. Navigational Stop Watch, Model 23 U. S. Navy Bureau of Aeronautics. These were issued to the Army Air Corps, the Navy's Bureau of Aeronautics, and the Air Council of the United Kingdom. Case is excellent with very light minor surface scratches from actual use. Movement and dial are near mint.