b'78225C Sudan: 1934 (Dec. 8) registered cover Khartoum to Brisbane, which joined the Imperial Airways first service to be extended from Singapore to Australia, AAMC #469f, bearing aggregate franking 10p20, representing 10p combined airmail rate per oz plus 20m registration, message on flap indicating this was commercial in nature, although typical of the era sender concludes with Keep this envelope as a curio, small blemishes. [Carried by Imperial Airways services Northbound flight AN196, and Eastbound IE298; the latter eventful: Aurora damaged its undercarriage at Calcutta (Dec 14), Diana at Camooweal damaged is tailskid (Dec .19), necessitating transfer of section of mail load to Hippomenes (Dec. 20), which in turn transferred to VH-UJS at Mount Isa, and later to VH-URV.] .$180240226C Switzerland 1937 (July-Aug.) trio of attractive frankings featuring 1923 Air and/or 1936-37 Surcharges, rated 1f90, 2f70 and 3f80 (registered), last with pair AROSA poster stamps on reverse. (3) .$160200227 229227C United States - Accelerated By Airmail: 1926 (Nov. 22) cover San Diego to Sydney with handstampedVia Air Mail paid at 24c for airmail service California-New York for connection to Trans-Atlantic liner,the next air link in that direction being the RAF conducted Cairo-Baghdad service, backstampedSan Francisco. The only example of this rate to Australia recorded by the vendor. .$250300228C Yugoslavia: 1938 (Nov. 26) registered cover from Samobor to Melbourne bearing 25d50 aggregate franking, comprising 1937 Air 2d50 x2, 10d pair and 50p, representing UPU 3d rate plus airmail surcharge 19d50 per 10gms plus 3d registration, backstamped Samobor, Zemun, Athens, Sydney, Melbourne, Camberwell. $140180Rest of the WorldFirst & Special Flights229C ANTARCTICA: Dec.1928 Deception Island-Antarctica per Sir Hubert Wilkins & Carl Ben Eielson with Falklands 1d just tied by Wilkins Antarctic/Deception/Island/Expedition cachet in green and by PORT STANLEY/29OC/30/FALKLAND ISLANDS datestamp, another strike of the cachet at upper-left, signed by the pilot CB Eielson; subsequently carried on the 1931 Wilkins-Ellsworth Trans-Arctic Submarine Expedition & signed Hubert Wilkins. The Antarctic flight proved that Graham Land was an archipelago and not a peninsula. $500750230C CANADA: 9 Oct. 1930 Newfoundland to England cover endorsed Courtesy of/Captain Boyd and/Lieutenant Connor USNR/Transatlantic/Fliers carried on the second flight of Airship Colombia with 4c Prince of Wales tied by HARBOUR GRACE (Newfoundland) datestamp and signed by pilot J Errol Boyd & navigator Harry P. Connor on the face, minor soiling. Only 20 posted from Harbour Grace. Ex Frommer. $160200231231C CHINA: 26 Sept.1925 China - Japan cover carried by Francesco de Pinedo with boxed FIRST AIRMAIL/CHINA-JAPAN cachet in violet alongside 3cts on 4c Junk adhesive tied by bilingual datestamp, signed by pilot Fde Pinedo at lower left. The mail was mislaid until March 1926 and only 52 items were recovered and forwarded of which only 6 were signed by De Pinedo, some blemishes on reserve from previous mounting however frontally fine. Ex Frommer. .$7501,000'