Netherlands East Indies. (Singapore). 1941. Registered Air Mail envelope addressed to the United States bearing Netherlands East Indies SG 405, 20c purple, SG 408, 35c violet (2), SG 409, 40c green and SG 439, 80c vermilion (3) tied by Semarang date stamp '7th Oct 41' with matching registration label, endorsed 'Air Throughtout' with 'Door Censuur Geopend' label tied by circular 'Dev/ 14' censor with hand-stamp Gecensureerd/ 5 and 'Ec. C.' in carmine on face, routed via Singapore with 'D' and '2' censor cachet in violet, Honolulu 'Nov 11' and Philadelphia 'Nov 15' on reverse. Superb item paying the 3g70 rate.