Four Chinese ideograms read top to bottom, right to left.
Obverse script
Chinese (traditional, regular
script)
Obverse lettering
乾
寶 通
隆 (Translation: Qian Long Tong Bao Qianlong (Emperor) / Universal currency)
Reverse description
Two Manchu words (read vertically) separated by the hole with dot above.
Reverse script
Mongolian / Manchu
Reverse lettering
ᠪᠣᠣ
ᡳ (Translation: Boo-i)
Edge
Smooth.
Mint
Mintage
ND
(1796-1820) - Hartill#22.403: Tong with closed head; six-stroke Bei - ND
(1821-1825) - Hartill#22.405: Tong with open head - ND
(1825-1850) - Hartill#22.407: Tong with closed head; seven-stroke Bei -