Subasta Bidspirit | KNIGHT'S CROSS WINNERS: A Royal

KNIGHT'S CROSS WINNERS: A Royal Air Force Museum commemorative cover issued for International Air Da... - KNIGHT'S CROSS WINNERS: A Royal Air Force Museum commemorative cover issued for International Air Day in 1971 individually signed by Gerhard Barkhorn (1919-1983, German Fighter Pilot, the second most successful ace of all time, Knight's Cross winner with Oak Leaves and Swords), Heinrich Brucker (1913-1984, German Luftwaffe pilot of World War II, Knight's Cross winner) and Karl Wulff (German Oberleutnant of World War II, Knight's Cross winner). Post marked 7th August 1971. All three have signed in bold blue inks to clear areas. About EX