Thailand. (Domestic Air Mail Service). 1925. Air Mail envelope addressed to 'Chan Chin Foo, Bangkok' bearing Siam SG 231, 3s chocolate, SG 232, 5s green and SG 234, 15s carmine tied by small 'aeroplane' date stamp of Nong Khay dated '11.2.25' and small 'aeroplane' arrival of Bangkok/ 10 on reverse '20.2.25'.
C.J. Chan, stamp dealer and philatelic writer send this cover on the weekly flight of the Royal Aeronautic Service from Nang-Khay to Bangkok.
