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 at least one mark at various locations.
Reverse script
Mongolian / Manchu
Reverse lettering
ᠪᠣᠣ
ᡳ (Translation: Boo-i)
Edge
Smooth.
Mint
Mintage
ND
(1775-1795) - Hartill#22.396+399: Mark above - ND
(1775-1795) - Hartill#22.397: Mark above and below; Tong with angled bottom - ND
(1825-1850) - Hartill#22.408: Mark above and below; Tong with flat bottom -