11th Sept. 1990 Gallantry Official Covercraft FDC, with Battle of Britain 1940 - 1990 50th Anniversary Coningsby Lincolnshire H/S. Signed by Squadron Leader Colin Paterson RAF Officer Commanding the Battle of Britain Memorial Flight. The covers was flown on 15th Sept. 1990 in a Lancaster B1 Bomber, The Pilot was Squadron Leader Colin Paterson. Flight Information on back of the cover. Pristine Condition.