976-989CE, Northern Song Dynasty, Tai Ping Tong Bao (1 Cash)

Obverse

Four Chinese ideograms read top to bottom, right to left (in Clerical script).

Script: Chinese (traditional, clerical script)

Lettering:
　太
寶　通
　平

Translation:
Tai Ping Tong Bao
Taiping / Universal currency

Reverse

Blank (uniface).

Weight: 3.17g

Diameter: 24mm

Harthill #16.16