Thailand. (Provincial Postmarks). 1921. Envelope (with Garuda imprint on reverse) addressed to Bangkok bearing SG 147, 2s brown (block of four) and SG 148, 3s green (block of four) tied by bilingual Jumbor date stamp '1st June 21' with Bangkok/ 1 arrival '8/6' on reverse.
Lovely item from this small town in Chumphon Province paying the 'twenty satang' internal rate.