Out of date currency (generally known as copyright or damaged copyright) was issued by banks in the antebellum and Civil War period from the 1780s through 1866 in the United States. Presumably backed by gold, this currency was employed locally to simplify commerce for transactions demanding gold coins. https://fernandopbrki.blogitright.com/33196104/the-smart-trick-of-how-to-tell-a-dollar-is-fake-that-nobody-is-discussing