Two Manchu words (read vertically) separated by the hole.
Reverse script
Mongolian / Manchu
Reverse lettering
ᠪᠣᠣ
ᠶᡠᠸᠠᠨ (Translation: Boo-yūn)
Edge
Smooth.
Mint
Mintage
ND
(1875-1890) - Hartill#22.1397: Large size; Tong with two dots - ND
(1875-1890) - Hartill#22.1398: Small size - ND
(1875-1890) - Hartill#22.1401: Large size; Tong with one dot -