Two Manchu words (read vertically) separated by the hole.
Reverse script
Mongolian / Manchu
Reverse lettering
ᠪᠣᠣ
ᠶᡡᠨ (Translation: Boo-yūn)
Edge
Smooth.
Mint
Yunnan Mint, Baoshan Branch,modern-day Yunnan, China (1776-1801) Yunnan Mint, Chuxiong Branch,modern-day Yunnan, China (1799-1801) Yunnan Mint, Dali Branch,modern-day Yunnan, China (1682-1801) Yunnan Mint, Guangnan Branch,modern-day Guangnan County, Yunnan, China (1799-1801) Yunnan Mint, Lin`an Branch,modern-day Jianshui County, Yunnan, China (1685-1861) Yunnan Mint, Old Dongchuan Branch, modern-day District de Dongchuan, Yunnan, China(1724-1908) Yunnan Mint, Qujing Branch,China (1777-1861) Yunnan Mint, Yunnan-fu Branch,modern-day Kunming, Yunnan, China (1659-1911)
Mintage
ND
(1797-1818) - Hartill#22.542: Tong with closed head; six-stroke Bei - ND
(1797-1818) - Hartill#22.543: Tong with closed head; seven-stroke Bei; regular type - ND
(1797-1818) - Hartill#22.544: Tong with closed head; seven-stroke Bei; Y-shaped top of Yuwan - ND
(1797-1818) - Hartill#22.545: Tong with closed head; seven-stroke Bei; feet of Bao at corners - ND
(1819-1820) - Hartill#22.546: Tong with open head; -