Stopwatch, Type A-8, Navigation Watch for Ground Speed 1942 "Jitterbug" F-89 Made by Swedish high-end leather

Made by Swedish high-end leather goods specialty manufacturer

it expands in the wide part of the tube

and others

It has an overhaul stamp on the rear case from Naval Air Station Penscacola (FL) dated Aug 1959

Stopwatch, Type A-8, Navigation Watch for Ground Speed 1942 "Jitterbug" F-89 Made by Swedish high-end leatherHere is an authentic WWII era aircraft navigator's Watch, Navigation (Ground Speed) Stopwatch, Type A 8, made by Elgin to Air Corps US Army spec #94 27749. With a serial # AC42 670, indicating manufacturing year of 1942. Type A 8 stopwatches were used in any WWII aircraft with a navigator, such as heavy (B 17, B 24, B 29) and medium bombers (B 25, B 26) and large transports (C 46, C 47, C 54). The outer ring of the dial counts up to 10 seconds and the