Hi, i have this coin; it would be a 10 cash of Guang Xu emperor, Boo Yuwan mint. Ponderal dates: -weight 9 g -diameter 31.5 mm -thickness 1.7-2 mm -medal alignment -presence of several cracks on the edge (but largely plain edge) -the coin present white signs... gypsum by cast process? The question is ... is this coin a replica/fake/forgery or authentic imperial 10 cash? Is it rare? (on "acsearch" website i found that this coin was sold for 1350€, but it was perfect with a fusion shank). Thanks for all informations.