Formation of the Army Air Corps official double signed cover RAF FF39. Signed by The First Colonel Commandant Army Corps General Sir Hugh Stockwell, and The Present Colonel Commandant Army Corps Major General M B Farndale. Cover commemorates the 25th Anniversary from the 1st September 1957. GB stamp and 25th Anniversary of the Formation of the Army Air Corps British Forces Postal Service 5782 September 1982 postmark. Carried in a Vintage Forces Post Office Van from Headquarters British Forces Postal Services Mill Hill to Chelsea Barracks. From there flown to Headquarters Army Air Corps Centre, Middle Wallop in Lynx AH Mk1 No XZ210 on the occasion of the 25th anniversary. Good condition Est.