Vietnamese large Minh-mang thong bao coin
Diameter 46.2 mm, weight 21.7g, bronze
Obverse (right image) bears legend of XIXth Century Vietnamese coin
Minh Man Thong Bao.
Once more Minh-mang thong bao
Nice additional information about such coin series can be found at Mr.Y.K.Leung site.
Any additional information would be highly appreciated.
Vladimir Belyaev .