BURMA 1940 WW2 CENSOR to USA BALTHAZAR ENVELOPE + SIGNED AIRMAIL PMK + INDIA OPT Balthazar & Son Ltd Rangoon printed flap envelope signed on front by Director; to Illinois USA; single KG5th 3A 6p overprint franking; Use Airmail slogan postmark; Passed Censor 10 Rangoon triangular.