China. (French Indo-China). 1902. Envelope addressed to Hanoi, French Indo-China bearing Chinese Imperial Post SG 123, 2c red and SG 124, 4c brown tied by Lungchow date stamp '27th Feb', routed via Lang-Son bearing Indo-China SG 25, 15c grey tied by Lang-Son/ Tonkin double ring '28th Feb' with Hanoi arrival '1st Mars' on reverse.
Very rare combination paying the internal domestic rate of three cents from Lungchow to the French Indo-China border and fifteen cents postage of French Indo-China to Hanoi.