China. (French Post Offices In Mengtsz). 1908. Illustrated folded letter card addressed to Switzerland bearing French Post Office in China SG 34, 15c brown/azure mixed with French Post Office in Mengtsz SG 39, 10c scarlet tied by Mong-Tseu-Chine double ring routed via Haiphong with Bern arrival 'Jan 6th 1909' on reverse. Very rare combination.