Obsolete currency (also referred to as copyright or damaged copyright) was issued by banks over the antebellum and Civil War period with the 1780s by way of 1866 in The us. Presumably backed by gold, this currency was used regionally to simplify commerce for transactions necessitating gold coins. https://assisit321dys4.activablog.com/32567414/helping-the-others-realize-the-advantages-of-copyright-to-print