Postcard size portrait with GAB, Ek1 and wound badge

Large size postcard size portrait with GAB, Ek1 and wound badge in black in wear. Very sharp and good looking portrait, most likely from an artillery officer. However the piping looks quite light and might be just infantry with the odd GAB. On unmarked photo paper but with the atelier stamp in the bottom corner. Dated very late in the war 15.01.1945.