Air Mail cover 1920 (30 June) First Flight Korat-Bangkok XU5 bearing 1909 3s. on 3a. and 1918 Victory 2s., 3s. (2) and 10s., cancelled by double-framed rectangular h.s. and showing square arrival h.s. adjacent, overall toning and some rust spotting affects adhesives nevertheless a very rare and desirable flight on which only 14 covers are believed to have been carried. Photo