1931 (10 Oct) American Legion flight cover, franked with 5c Winged Globe, used in combination with German franking, Dornier, Do-X hs and appropriate cachets, with Rio de Janeiro and Istanbul arrival pmks, signed by John Palando and further autographed by Admiral Byrd, with handstamp "Personally Carried by Russell Boardman to Istanbul Aboard the Plane Cape Cod", also an additional postcard and cover with German franking, flown on DoX to USA, fine-v.f. (Image)

Est.$500