This is a beautiful sheet consisting of 6 stamps, issued by Congo in 2006, displaying a variety of American military airplanes. Featured on the sheet include the Grumman TBM-3 Avenger 1945, Boeing B-17G Flying Fortress 1944, Grumman F4F-3 Wildcat 1941, Consolidated B-24H Liberator 1944, Northrop P-61 Black Widow 1945, and the North American B-25H Mitchell 1943. The sheet is Post Office fresh, mint never hinged.