This is WWII German Zündschalter (Ignition Switch), Fl. 21119, SSH 45/6Z, used in the Fw190, Ta152, Bu133, Bf108, and Do24 aircraft's. It was the main ignition switch which engaged the magneto for engine start-up and was located on the left side of the instrument panels or console. Made by Bosch, this aluminum instrument is excellent condition and the key works smoothly and correctly.