3 Cash - Zhihe Zhongbao, read standard

Zhihe was a reign period lasting just two years under Emperor Renzong of the Song dynasty — the final era title of a reign that had itself stretched over four decades, the longest of any Song emperor. Iron cash of this period were produced to supplement chronic copper shortages, a problem that worsened throughout the mid-eleventh century as copper was hoarded, exported, or consumed by the Buddhist trade in ritual bronzes. Iron coinage was never popular with the public and circulated poorly outside the regions where it was issued.

Hartill 16.145 is among the scarcer iron issues of Renzong's reign.