1526000 Foreign Covers Airmail. British Jet Flight. Aug. 25, 1953 test flight.

9507.
British Jet Flight.  Aug. 25, 1953 test flight.
 
British Jet Flight.  Aug. 25, 1953 test flight on board P-111A Delta wing Jet Resarch Plane at Boscombe Down.  Autographed by pilot A. E. 'Ben' Gunn.  Nice early commercial jet aviation piece.
Fine/Very Fine