Indo-China. (Viet-Nam). 1950. Stamp-less Air Mail envelope written from Tanh- Linh/Annam ‘S.P. 4103’ 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 oval ‘Le Vagumestre/S.P. 57.672’’ in violet. Superb item of Indo-China military mail. See Desrouddeaux Book 4.