Four Chinese ideograms read top to bottom, right to left.
Obverse script
Chinese (traditional, regular
script)
Obverse lettering
永
通 寶
曆 (Translation: Yong Li Tong Bao Yongli (Emperor) / Universal currency)
Reverse description
One dot above and sometimes one below.
Reverse script
Reverse lettering
Edge
Smooth.
Mint
Mintage
ND
(1646-1659) - Hartill#21.52: Dot above and below; Yong without top horizontal line (Tong with closed head) - ND
(1646-1659) - Hartill#21.53: Dot above and below; Yong with top horizontal line (Tong with closed head) - ND
(1646-1659) - Hartill#21.57: Dot above (Tong with open head) -