Germany, Luftwaffe. A Lot of Mint and Unissued Technical Personnel Sleeve Badges

(Luftwaffe Ärmelabzeichen). A lot of ten Luftwaffe Technical Personnel sleeve badges, each constructed of dark grey wool, the obverse bearing a machine-embroidered silver-grey insignia, all unmarked and measuring 100 mm (w) x 40 mm (h), in unissued and overall near mint condition.