Netherlands East Indies. (Singapore). 1940. Air Mail envelope addressed to New York bearing Netherlands East Indies SG 404, 15c ultramarine, SG 409, 40c green and SG 413, 1g violet (pair) tied by Batavia date stamp '10th Oct 40' with 'Nederland/ Zal Herruzen' label tied on reverse, endorsed 'By Transpacific Airoute via Hong Kong/ to USA and Onward Air-Transmission' with 'Door Censuur Geopend' label tied by circular 'Dev/ 1' hand-stamp routed via Singapore with censor tape tied by framed 'Passed by Censor/ 150/ Singapore' in violet with 'K' and '28' hand-stamp in violet on face. Superb.