b'77220C Netherland Antilles - Curacao: 1941 (Dec. 12) Philips Gloeilampenfabrieken (Willemstad) dual censoredcover to Sydney franked 1931 Air franking aggregate 1g30 for PanAm service UPU 15c plus airmail surcharge 1g15 per 5gms, triangular Curaao Censor handstamp, Sydney Censor tape/handstamp applied upon arrival,trifle creased. $140180221221C Netherland Indies: 1940 (June 25) censored cover Medan to Melbourne franked 35c carried on inaugural Horseshoe flight, a rare commercial intermediate, confirmed by Melbourne Club arrival time clock(July 1), rare Militaire/(arms)/Censuur - Medan label and handstamped 2 lower right corner, small blemishes, AAMC.903d. $240280222 223222C Nicaragua: 1932 (Feb. 27) The Anglo-South American Bank (Managua) registered cover to Sydney bearing aggregate franking (both sides) 1cor27 for airmail to USA only, backstamped San Francisco, Sydney,very early and attractive. .$140180223C North Borneo: 1940 (Oct. 29) censored cover from Kudat to Sydney endorsed By BOAC for Horseshoe route, bearing aggregate franking of 60c for post-EAMS combined airmail rate 60c per oz, rare framed PASSED BY/12/CENSOR/NORTH BORNEO handstamp. .$350450ex 224 225224C Poland: 1934 (Aug-Nov) Markus Silberberg (Lodz) covers to Henry B Smith (Melbourne), with attractive franking compositions of 360g and 365g via Karachi Imperial Airways service (flights IE283 and 294), earlier with manuscript poczta lotnicza on front and CHALLENGE 1934 segmented (Aug 21 1934) backstamp.(2) $300400'