Indo-China. (Viet-Nam). 1949. Stamp-less Air Mail envelope written from Tanh-Linh/Annam 'S.P. 72.835' addressed to France cancelled 'Poste Aux Armees/T.O.E' with military cachet 'Garde Indochinoise/Le Chef de Poste/Poste de Tanh-Linh' in red with adjacent 'X.S.P. 31.113/Extreme Orient/Le Vaguemestre' double ring in violet. Superb item of Indo-China military mail. See Desrouddeaux Book 4.