Grasset set overprinted for use in China, 1905, Michel Nr. IND 17-28KT; Kuoang-Tcheou 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. Fifteen stamps of the Allegory of Peace set were overprinted as follows: 1C, 2C, 4C, 5C, 10C, 15C, 20C, 25C, 30C, 40C, 50C, 75C, 1F and 5F.
Here are the m.h. 1 and 5C stamps.
Registration Nr. 090053