Luftwaffe Flight Technical Personnel's (Fliegendes Personal) trade badge (Tätigkeitsabzeichen). The flight personnel's trade badge was introduced for wear by qualified personnel on 13 May 1935, te badge was intended for wear by flight personnel that had not yet been awarded with the Pilots, Observers, Pilot/Observers or Air Gunners Badge. The badge is nicely machine-embroidered in white/silver on a blue-grey woolen background. Nice example in clearly worn and tunic removed condition!