Hans Von Ohain & Erich Warsitz signed 1979 Jet Aircraft First Flight 40th anniversary. Hans Von Ohain was a German physicist & engineer who designed the first operational jet engine. Erich Warsitz was the German test pilot who went on to be the first person to fly an aircraft under turbojet power, the Heinkel He 178.
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Brian Trubshaw, Peter Holding, Mike Addley & Alan Heywood signed 1969 Concorde, GPO cover. Mike Addley - Concorde flight engineer. Brian Trubshaw - the first British pilot to fly Concorde on April 9.
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M/M (mounted mint) is Hinged Mint.
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Scott's Catalog # 1. German used stamp.
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Royal Concorde Flight London to Washington 20th anniversary, which flew Queen Elizabeth II & Prince Philip.
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Charles Sweeney signed Canadian 1989 World War Two 50. th anniversary cover. He has inscribed ‘Maj. Gen USAF (Ret)’.
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