Cover bearing nice three colour franking from London 23 Sep 1930 by KLM airmail line Amsterdam-Bandoeng via Weltevreden 4 Oct to Batavia 4 Oct. (VH.B.46l)

Cover (part of flap missing) bearing nice three colour franking from Singapore 28 July 1933 by KLM aircraft PH-AIJ (IJsvogel) departing at Bandoeng 26 July, arriving at Amsterdam 2 Aug, further to London

Cover (part at top cut-off) of 18 grams franked with 55 cent from Makasser 2 May 1940 'AIR MAIL / LUCHTPOST / via Amsterdam' to Oregon, however written 'Service Suspended' due to war circumstances. Interesting

Two long censored covers from Bandoeng 1941 to New York, both franked with 210 cent, through different air mail routes, one cover bearing block of ten of 20 cent Kreisler + 10 cent Van Konijnenburg from 15 June 'Via KNILM to Australia Pan-An from New Zealand' (scarce route in use for short time), the other bearing 2 gulden Van Konijnenburg + 2x 5 cent Numeral from 1 Aug 'Special KNILM to Manila / P.A.A. to U.S.A.