1 Cash - Jiayou Tongbao, Clerical script

Jiayou was the final reign title of Emperor Renzong, who ruled the Northern Song for over four decades — the longest reign of any Song emperor. The Jiayou cash were struck during a period of relative fiscal stability, though the dynasty was already paying enormous annual tribute to the Liao and Xi Xia states under the terms of the Chanyuan Treaty and the Qingli Accord. That hemorrhage of silver and silk placed persistent pressure on copper coinage production.

The clerical script variety, catalogued by Hartill as 16.153, is the scarcer of the script types for this reign title.