China. (French Indo-China). 1936. Air Mail postal stationary envelope 5c violet written from 'Minh-Cam Forest' with 'Paste Rurate/ Co-Cang /Province de Quang-Binh' circular upgraded with Indo-China SG 181, 10c blue and SG 210, 66c olive tied by Dong-Hai/Annam date stamp '29/10' with registered label and boxed 'A.R.' addressed to France viia Saigon '31/10' and Var arrival '10/11' on reverse. Very rare usage of Rural Post mail from Co-Cang, Annam.