Sc. 3916-25 Aviation intact block of 10 stamps on a 8½"x11" Dragon Card, featuring a faux stamp with a propeller. Color variety: Card background is more greenish. Half the block is canceled with the Vienna, Va., First Day of Issue hand cancel, the other half with the Oshkosh, Wis. FDOI postmark. Great for an aviation- or airplanes-on-stamps collection!