Korea, Joseon Dynasty. Sang Pyong Tong Bo; 1 Mun. Treasury Department. 1806-1814 AD. (3.03g; 23.5mm). O./ 常 平 寶 通 [Sang p'yong tong bo; Department of Korean Yi Dynasty, currency unit]. R./ 户 入  ) [(Ho): Treasury Department, (IP) to Enter, Crescent to left]. Mandel#13.63.1. $18