Learn what banknotes are, how they are used, and the history behind them, including differences from regular money and modern ...

Tax Day has now passed, and people have money on their minds. You may have read news reports that people should not spend certain banknotes because they may be worth thousands of dollars, far more ...

Several currency denominations have been discontinued by the U.S. Treasury, and others are still in circulation but rarely used.

Paper currency doesn’t get as much attention on the collector’s market as coins, which have a metal content that boosts their value and sometimes dates back to the earliest days of human civilization.