b'42110110C D June - August 1926 (AAMC.95) London - Melbourne cover, flown, signed and endorsed by Alan Cobham on the epic flight in his DH50 seaplane; postmarked in Darwin before onwards carriage to Melbourne. Accompanied by a signed note from Cobham, date-lined New York, 3rd January 1927 explaining the small number of covers carried, etc.Provenance: Nelson Eustis Gold Medal Collection, March 2003, Lot 101 : $3060 incl. BP. $3,0004,000111111C 30 June 1926 England - Australia - England (AAMC.96) cover signed by pilot Alan J Cobham and endorsed by him Carried on board the DH50 Seaplane/on its outward journey to Australia & back/July August Sept 1926 with Great Britain KGV 1d tied SYDNEY 16AU26 datestamp on arrival, fine condition, Cat. $5000. Cobham arrived in Sydney via Darwin on 15 August; on the return trip he left Melbourne on 29 August and arrived London on 1 October. Fewer than five covers were flown on the entire round trip, the return leg being the first airmail carried from Australia to England.Provenance: Tom Frommer . $4,0005,000'