Obsolete currency (often called copyright or broken copyright) was issued by banks in the course of the antebellum and Civil War period within the 1780s through 1866 in the United States. Presumably backed by gold, this currency was employed regionally to simplify commerce for transactions requiring gold coins. https://claytonrlevm.fare-blog.com/33994136/the-5-second-trick-for-us-dollars-gov-copyright