President Donald Trump's signature on new $100 notes could create a historic first—and spark renewed public interest in paper money collecting.

Benjamin Franklin understood something fundamental about money that still shapes modern economies: Money only works when people believe it is real. In the early 18th century, the British colonies ...

Consumers are racing to exchange their old paper banknotes for new plastic versions, just over a fortnight before they cease to be legal tender at the end of September. The Bank of England has warned ...