Thailand. (Advice of Receipt). 1927. Registered and Advice of Receipt envelope addressed to Chicago bearing SG 216, 5s violet (strip of four) and SG 221, 25s blue tied by Bangkok/ 4B date stamp with matching registration label and framed 'A.R.' in carmine on face, routed via Bangkok/ 2C' with New York/ Reg and Chicago receiver on reverse. Advice of Receipt mail from Siam is very scarce. This is a very attractive item for the Exhibitor.