Indochinese Women overprinted for use in Yunnan-Fou, 1919, Michel Nr. IND 50VII-66VII; Yunnan-Fou was a French treaty port within China that was established after the Treaty of Whampoa was signed in 1844. This allowed the French to use five ports to French merchants, establish consulates there, provided certain special rights to French citizens and a fixed duty on French-Chinese trade. Sixteen stamps of the Allegory of Peace set were overprinted as follows: 1C, 2C, 4C, 5C, 10C, 15C, 20C, 25C, 30C, 35C, 40C, 50C, 75C, 1F, 2F, 5F and 10F.
Here is the m.h. partial set.
Registration Nr. 090051