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
(1729-1733) - Hartill#22.166: Tong with one dot - ND
(1729-1733) - Hartill#22.167: Tong with two dots; closed head - ND
(1729-1733) - Hartill#22.168: Tong with two dots; open head -