Turn and Bank Indicator Type A-8, Air Corps US Army, WWII, B-17, P-51, P-38 Sperry It has a test label

It has a test label dated Nov 1957

and P-51 Mustang

but that is a guess

the leather could use some conditioning

The glass and case are intact and the markings are in perfect condition

Turn and Bank Indicator Type A-8, Air Corps US Army, WWII, B-17, P-51, P-38 Sperry It has a test labelThis pre & early WWII era Turn & Bank Indicator Type A 8, made by Bendix Part No. 1718 2S A2 for the Air Corps US Army, was used across virtually all its aircraft during WWII, including bombers B 17, B 24, B 25, B 26, fighters, P 38, P 39, P 40, P 47, P 51, and transports C 46 and C 47. Imprinted on the face, but barely discernible in the photos, is "AC US Army" (Air Corps US Army), and its serial number prefix is AC41, indicating the manufacturing