Out of date currency (also known as copyright or broken copyright) was issued by banks over the antebellum and Civil War era with the 1780s by 1866 in the United States. Presumably backed by gold, this currency was employed locally to simplify commerce for transactions requiring gold coins. https://andrepcoyh.goabroadblog.com/32439203/not-known-facts-about-copyright-1-dollar-billsus-code-copyright-money