Ancient Chinese Paper Money Had Warnings Against Counterfeiting

The advent of paper money in China's Song Dynasty, around the 10th century, was a revolutionary step in commerce, born out of necessity. Merchants, burdened by the weight of carrying thousands of copper coins for large transactions, began using privately issued bills of credit. Recognizing the utility of this system, the government eventually took over the issuance of this new currency, creating the world's first government-issued paper money. To protect the integrity of this fledgling monetary system, the authorities employed a variety of sophisticated anti-counterfeiting techniques. These included using specially made paper, intricate designs, and the application of multiple official seals and stamps in colored inks to authenticate the notes.

A particularly striking feature of these early banknotes was the explicit warning printed directly on them. These inscriptions promised dire consequences for forgers, with the most severe punishment being death by decapitation. This was not an idle threat, as counterfeiting was considered a serious crime against the state. To further incentivize the public's cooperation in policing the currency, a significant reward was also offered to those who reported counterfeiters. Informants could receive a large sum of silver, and in some cases, even the entire property of the convicted forger.

Despite these harsh penalties and elaborate security features, the threat of counterfeit money was never fully eliminated. Forgery remained a persistent issue throughout different dynasties, contributing to periods of high inflation. The government's own over-issuance of notes also played a significant role in devaluing the currency. This ongoing struggle with counterfeiting and inflation ultimately led to the temporary abandonment of paper money by the mid-15th century, with the economy reverting to a system based on specie like silver and copper coins.