Luftwaffe Rank Patch (Dienstgradabzeichen). The patch is showing one so-called 'moustache' (Schwinge) indicating an Unteroffizier's rank. The moustache is executed in white wool and sewn on a dark-blue woolen background. These patches saw usage on the flight-overalls and even on paratrooper jump-smocks. Nice original rank-patch in good unissued condition!