Jiaozi (currency)

Jiaozi (Chinese: 交子; pinyin: jiāozǐ) was a form of banknote which appeared around the 10th century in the Sichuan capital of Chengdu, China. Numismatists regard it as the first paper money in history, a development of the Chinese Song Dynasty (960–1279 CE).

To combat counterfeiting, jiaozi were stamped with multiple banknote seals.