Two Manchu words (read vertically) separated by the hole.
Reverse script
Mongolian / Manchu
Reverse lettering
ᠪᠣᠣ
ᡠ (Translation: Boo-u)
Edge
Smooth.
Mint
Mintage
ND
(1796-1806) - Hartill#22.513: Tong with closed head; radical 八 in 貝 - ND
(1806-1820) - Hartill#22.515: Tong with closed head; radical 人 in 貝 - ND
(1806-1820) - Hartill#22.517: Tong with open head -