India. (Netherlands East Indies). 1940. Air Mail envelope addressed to the Netherlands East Indies bearing India SG 249, 9p green (2) and SG 257, 6a slate tied by Jahalrapatan (City) double ring on reverse '14th Mar 40' , with 'Opened by Censor' tape tied by triangular 'Passed Cenor/ Calcutta', endorsed 'via Singapore and Sourabaya' , underpaid with circular 'T' and bearing Netherlands East Indies postage due SG D230, 7 1/2c salmon and SG D238, 40c salmon (pair) tied by Denpasar receiver '27th Mar' on face. Very fine.