Thailand. (Burma - Trans -pacific Mail). 1940. Air Mail envelope addressed to France bearing Thailand SG 242, 25s deep blue and SG 243, 50s black and orange-browen (4) tied by Bangkok GPO date stamp '23rd Nov 40', carried by 'BO.A.C.' to Rangoon '24/11' with censor label 'Opened By Censor' (red on white tape) and triangular 'Passed Censor Rangoon/ 6' in violet on face, sent 'C.NA.C.' via Hong Kong and Hawaii, two Oceans route via Lisbon and Ireland with 'P.C. 90/ Opened By Examiner/ 6616' label applied with red parallel bar "jusqu'a mark applied at London office of exchange and sent by rail to France with written notation indicating the letter arrived 'R. 23.3.41' on reverse.