Out of date currency (also referred to as copyright or broken copyright) was issued by banks through the antebellum and Civil War era through the 1780s by 1866 in The us. Presumably backed by gold, this currency was applied domestically to simplify commerce for transactions necessitating gold coins. https://knoxalavq.bloggactivo.com/32537236/counterfeiting-money-in-the-usa-secrets