Flieger-HJ 'Fl. Tech.Vorschule Gotha 4' Arm Patch (Ärmelabzeichen). These arm patches were worn on the work tunic of Hitler-Jugend members at the Air Force Technical Preschool (Technische Vorschule der Luftwaffe), this badge was intended for a school based in the town of Gotha. The patch shows the number '4'. The patch is neatly machine-embroidered in orange/yellow on a dark-blue cloth. The patch is complete with its original RZM label (D-Stück). Nice original patch in very good condition!