This is a beautiful souvenir sheet, issued by Comoros in 2009, honoring celebrities of aviation. Featured are United States Air Force test pilot Major General Chuck Yeager & the Bell X-1 first aircraft to exceed the speed of sound, French aviator Jean Mermoz with his Latécoère 300 plane, the Concorde aircraft, and a brief written description of the history of aviation. The sheet is Post Office fresh, mint never hinged, and F/VF.