Two Manchu words (read vertically) separated by the hole.
Reverse script
Mongolian / Manchu
Reverse lettering
ᠪᠣᠣ
ᠶᡡᠨ (Translation: Boo-yūn)
Edge
Smooth.
Mint
Mintage
ND
(1862-1874) - Hartill#22.1171: Tong with open head; Board of Revenue type - ND
(1862-1874) - Hartill#22.1177: Tong with open head; local type (angular Yūn) - ND
(1862-1874) - Hartill#22.1202: Tong with closed head -