RAF goodwill flight 1936, envelope carried on all stages of the flight from Singapore as far as Shanghai. As the flight could not continue to Japan due to the military coup there on 26 February, the cover went on by surface mail and was given an arrival mark at Kooji-Machi post office in Japan on 11 March. The red Japanese characters on the left of the envelope were probably added at the post office as they translate to: Try the British Embassy. The cover is franked at 18 cents and cancelled Singapore 8 February, no reverse markings and signed Joffe