Two Manchu words (read vertically) separated by the hole, all with circle at various locations.
Reverse script
Mongolian / Manchu
Reverse lettering
ᠪᠣᠣ
ᠶᡡᠨ (Translation: Boo-yūn)
Edge
Smooth.
Mint
Yunnan Mint, Lin`an Branch,modern-day Jianshui County, Yunnan, China (1685-1861) Yunnan Mint, Ningtai Factory Branch, Yongping, modern-day Yongping County, Yunnan, China(1853-1861) 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
(1854-1861) - Hartill#22.0987: Circle above; seven-stroke Bei - ND
(1854-1861) - Hartill#22.0999: Circle above; six-stroke Bei - ND
(1854-1861) - Hartill#22.1000: Circle below -