Airspeed Indicator,300MPH, Army Type C-14, US Army Air Force, WWII PV-2 Harpoon it appears to have been

it appears to have been used in the Hispano Aviation HA-1112 "Buchón" fighter used during the Spanish Civil War

Junkers Ju-88

We aren't certain

Here is an authentic WWII-era Recognition Poster of aircraft of the Empire of Japan (both Army and Navy) published by the Division of Naval Intelligence of the US Navy in April 1942

Airspeed Indicator,300MPH, Army Type C-14, US Army Air Force, WWII PV-2 Harpoon it appears to have beenThe Army Type C 14 Airspeed Indicator was used across a number of US Army Air Corps and Air Force aircraft during WWII, including C 46 Commando, C 47 Skytrain and C 54 Skymaster transports, according to the Accessories Interchangeability Chart dated Feb 1945. This C 14 was made by Bendix, part number 1426 1AE A1, and has a serial number prefix of AF43, indicative of a 1943 manufacturing date. See spec sheet in photos. It is in good condition given its