1951 MAIL TURKEY TO LONDON/COMBINATION TURKISH AND BRITISH STAMPS. 1951 airmail envelope Turkey to London with 2 x Turkish 20k stamps, uncancelled, upon arrival in London 2½d Festival of Britain (SG513) added and cancelled 27 SP 1951. Manuscript of front 'I presume this letter arrived in the Diplomatic Bag and stamped and posted in London'. No Turkish marks. Unusual (Ref 54262).