VIETNAM (ANNAM), Nguyễn dynasty. Thánh Tổ (Minh Mạng). 1820-1841. AV Tìên (23mm). Ming Mang Bao Thong in Han-nom characters around central hole / Blank. Schroeder –; BN, Vietnamiennes –; Thierry, Extrême –; KM –; Friedberg 2a; Heritage 3016, lot 23257. In NGC encapsulation graded AU 55. Very rare.
From the collection of Dr. Lawrence A. Adams.