Photo appears to be of two brothers.
Size is 8 inches by 10 inches. The paper is thick. Between the layers you can see it was manufactured by Kodak. Kodak is an American based company that still traded with Germany even after the war was declared. Price reflects speculation of when it was printed and including shipping in the US.
Almost mint card with a great picture 3 1/2 by 5 1/2 inches. Free shipping
SS Rottenführer Postcard Portrait ☇☇