CHINA - French P.O. 1917, 4c. on 10c. red on grey postal stationery letter-card used to Winterthur, Switzerland, cancelled by SHANG-HAI / CHINE c.d.s. on despatch with triangular ‘T’ marking at left. Censored by French Military with Reseal ‘Controle Postal Militaire’ and taxed on arrival with Swiss Postage Due 30c. (Nov 23). Scarce and most attractive. Ex. Desrousseaux. (Photo). Est. 100 - 200 CHF.