Four Chinese ideograms read top to bottom, right to left.
Obverse script
Chinese (traditional, regular
script)
Obverse lettering
啓
寳 通
定 (Translation: Khải Định Thông Bảo Khải Định (Emperor) / Universal currency)
Reverse description
Blank (uniface).
Reverse script
Reverse lettering
Edge
Smooth.
Mint
Société de constructions mécaniques, Haiphong, Vietnam Thông Bảo Nha, Huế, Vietnam
Mintage
ND
(1920-1926) - KM# 655, Joyaux# 603: Thông with closed head - ND
(1920-1926) - KM#656, Joyaux# 604: Thông with open head, Khải with 10 strokes - ND
(1920-1926) - KM#656, Joyaux# 605: Thông with open head, Khải with 11 strokes -