Thailand. (A.V. 2 - Canada). 1951. Air Mail envelope addressed to Vancouver bearing SG 334, 2b yellow, SG 335, 3b grey, SG 336, 5s purple (pair), SG 337, 10s green (pair) and SG 342, 1b blue tied by Bangkok GPO date stamp with bold 'A.V. 2' hand-stamp.
Nice five colour combination paying the 6 baht 30 satang Air Mail rate to Canada with Avis de Reception hand-stamp.