• SWITCH- Microphone/Panel Lamp Test. B-17 Flying Fortress, WWII Aviation PTS-0103


    SWITCH- 7/8" Diameter Overall, Microphone/Panel Lamp Test

    These are new old stock, but do show signs of age having been in storage for 70 years. As used on B-17 Flying Fortresses instrument panels as well as the control yoke as a microphone switch. Made in the USA.