Thailand. 1940. Registered Air Mail envelope addressed to New York bearing SG 243, 50s black and orange brown (3). SG 245, 2t vermilion and carmine and SG 287, 5s purple tied by Bangkok date stamp '16th Dec' with matching registered label endorsed 'Per B.O.A.C. Airmail ( via Sydney ) with GPO Sydney / Air transit '26th Dec 40' and Honolulu, Hawaii 'Dec 31' and New York / Reg arrival '3rd Jan 41' on reverse. Superb Air Mail item