This is a beautiful stamp souvenir sheet, issued by Guinea in 2011, honoring Presidents of the United States of America. Featured on the sheet include the 30th President of the United States Calvin Coolidge, American aviator Charles Lindbergh receiving his Hubbard Medal from President Calvin Coolidge, and Lindbergh's "Spirit of St. Louis" aircraft, among others. The sheet is Michel #8254 / Bl.1920, and is Post Office fresh, mint never hinged, and F/VF.