Luftwaffe officer’s shirt

German tailor's shirt in blue-grey cotton offered in the catalog of the kleiderkasse for officers of all arms. Manufacturer's label marked "Bielefelder Fabrikat Sanfor Kauft nicht ein, Sanfor made in Bielefeld does not shrink" On the collar a stamp marked "Immerneu falten freï,Always fold freely" and a series of numbers. Mother-of-pearl buttons. Half-buttoning system.