French Indo-China. (Postcards - Postage Dues). 1917. Picture post card of 'Annamite writer' addressed to France bearing French Indo-China postage dues SG D77, 50c turquoise (pair) tied by Saigon-Central double ring '1st Mars 17'.
In 1916-17, French Indo-China authorized the provisional use of the 1908 'Chiffre-tax' (postage dues) for regular postage to address the temporary shortage of standard stamps, due to war time supply disruptions.