China. (Indo Chinese Post Offices In Chungking). 1904. Red Band envelope addressed to Paris bearing French Post Office in Indo-China SG 13, 25c black/ rose tied by Tchong King double ring 'Avril 5' routed via Hankow with French Post office Han-Keou-Chine transit and Paris arrival on reverse '29/5' . First type Tchong King postmark. See Desrousseaux. Rare.