1925 (16 Feb) Anglo-Indian Survey Flight by Alan Cobham, cover flown from Calcutta to London bearing an uncanceled 2a George V and the green flight vignette with triangular flight cachet and 3d charge mark of London E.C, a 3d postage due stamp applied at Kensington, 17 March Waldon Aerodrome Croydon arrival and signed on the reverse by Flight Engineer Arthur B. Elliott (who was killed a year later, when on a flight between Baghdad and Basra), hinge remnants, fine cover, only 121 carried