Rare coins and bills that haven't been released to the public are often worth a lot of money thanks to an error or specific ...

It sold for $368,000 in 2005. Another very early example of paper currency, the 1863 (Fr. 150) legal tender note is a really ...

But how did we transition from using gold, a scarce and valuable commodity, to relying on paper money that holds no intrinsic worth? Gold, while highly valuable, was not easily portable ...