Two Manchu words (read vertically) separated by the hole.
Reverse script
Mongolian / Manchu
Reverse lettering
ᠪᠣᠣ
ᠶᡠᠸᠠᠨ (Translation: Boo-yuwan)
Edge
Smooth.
Mint
Ministry of Public Works Mint,Auxilliary furnaces (工部局), Beijing, China (1726-1898) Ministry of Public Works Mint, New Branch (工部局), Beijing, China (1726-1898) Ministry of Public Works Mint, Old Branch (工部局), Beijing, China (1726-1898)
Mintage
ND
(1851-1853) - Hartill#22.742: Type A (New branch) - ND
(1853-1857) - Hartill#22.743: Type B; Tong with closed head (New branch) - ND
(1853-1857) - Hartill#22.744: Type B; Tong with open head and two dots (Old branch) - ND
(1853-1857) - Hartill#22.745: Type B; Tong with open head and one dot (Auxiliary branches) -