Korea, Joseon Dynasty. Sang Pyong Tong Bo; 2 Mun. General Military Office. 1742-1752. (6.02g; 31.0mm). O./ 常 平 寶 通 [Sang p'yong tong bo; Department of Korean Yi Dynasty, currency unit]. R./ 捻 玄 (Chong): General Military Office, (xuan) Mysterious, Third character in the Thousand Classic Characters]. Mandel#24.11.3 $30