The Jiading Tongbao was issued under Emperor Ningzong of the Southern Song dynasty, a reign defined by constant pressure from the Jurchen Jin dynasty to the north. Iron cash of this period reflect a chronic copper shortage that had plagued Southern Song finances for decades — the dynasty's truncated territory cut it off from many of the traditional copper-producing regions now held by the Jin. Iron coinage was a fiscal stopgap, minted in volume but poorly received in commerce, often trading at a discount against bronze equivalents.
The two-cash denomination in iron was particularly prone to casting irregularities, and survivors with clean, legible reverses are notably less common than face value alone would suggest.
The Jiading Tongbao was issued under Emperor Ningzong of the Southern Song dynasty, a reign defined by constant pressure from the Jurchen Jin dynasty to the north. Iron cash of this period reflect a chronic copper shortage that had plagued Southern Song finances for decades — the dynasty's truncated territory cut it off from many of the traditional copper-producing regions now held by the Jin. Iron coinage was a fiscal stopgap, minted in volume but poorly received in commerce, often trading at a discount against bronze equivalents.
The two-cash denomination in iron was particularly prone to casting irregularities, and survivors with clean, legible reverses are notably less common than face value alone would suggest.