b'43112112C 7 Aug.1926 (AAMC.97) Darwin - Sydney - Melbourne registered cover, carried by Alan J. Cobham on the last legs of his epic flight from England in a DH50 seaplane. With appropriate backstamps and original enclosures from J.C. Buscall at the Government Hospital, Darwin. [only 10 flown].Provenance: The Nelson Eustis Gold Medal Collection, Leski Auctions, March 2008. .$1,5001,750113113C June - August 1926 (AAMC.99b) Alan Cobham England - Australia Flight, printed Calcutta to Rangoon cover with a black border and printed explanation that Arthur Elliott, the flight engineer, had been killed by a bullet fired from the ground between Baghdad and Basra. Franked by India 1a cancelled at Calcutta (July 23) and signed by Sgt. A.H Ward who replaced Elliott on the flight, the reverse bearing a photographic England - Australia flight vignette and a Rangoon c.d.s (July 26). (45 Covers flown from Calcutta to Rangoon, just seven signed by Ward.) An identical cover in the John Crowe Collection sold for 400 + BP in March 2019. .$400500'