Obsolete currency (also known as copyright or damaged copyright) was issued by banks through the antebellum and Civil War period within the 1780s as a result of 1866 in The usa. Presumably backed by gold, this currency was utilized regionally to simplify commerce for transactions necessitating gold coins. https://gregoryahvdi.digitollblog.com/33134775/the-smart-trick-of-what-us-currency-is-the-most-copyright-that-no-one-is-discussing