Korea, Joseon Dynasty. Sang Pyong Tong Bo; 1 Mun. Treasury Department. 1757-1806 AD. (4.43g; 24.3mm). O./ 常 平 寶 通 [Sang p'yong tong bo; Department of Korean Yi Dynasty, currency unit]. R./ 户 十 (  [(Ho): Treasury Department, (Shi) Series Ten, Crescent to right]. Mandel#13.22.10. $16