1978 "75th Anniversary of First Engine Flight" souvenir-sheet issue.
Subject with: Charles Lindbergh´s Spirit of St. Louis 1927, Wilbur and Orville Wright´s Flyer A 1903, Concorde supersonic airliner, Libyan Airlines Boeing 727
Subject with: Charles Lindbergh´s Spirit of St. Louis 1927, Wilbur and Orville Wright´s Flyer A 1903, Concorde supersonic airliner, Libyan Airlines Boeing 727