Four Chinese ideograms read top to bottom, right to left.
Obverse script
Chinese (traditional, regular
script)
Obverse lettering
道
寶 通
光 (Translation: Dao Guang Tong Bao Daoguang (Emperor) / Universal currency)
Reverse description
Two Manchu words (read vertically) separated by the hole.
Reverse script
Mongolian / Manchu
Reverse lettering
ᠪᠣᠣ
ᡩᡠᠩ (Translation: Boo-dung)
Edge
Smooth.
Mint
Mintage
ND
(1821-1825) - Hartill#22.637: Bottom of Dao bent; Tong of Dung looped - ND
(1821-1825) - Hartill#22.638: Bottom of Dao bent; Tong of Dung straight - ND
(1826-1846) - Hartill#22.639: Bottom of Dao straight; Tong with open head; Tong of Dung straight - ND
(1826-1846) - Hartill#22.640: Bottom of Dao straight; Tong with open head; Tong of Dung looped; seven-stroke Bei - ND
(1826-1846) - Hartill#22.641: Bottom of Dao straight; Tong with open head; Tong of Dung looped; six-stroke Bei - ND
(1847-1850) - Hartill#22.642: Bottom of Dao straight; Tong with closed head -