Your $1 bill could be worth thousands. Here's how to check
Depending on the year and how the dollar was circulated, some $1 bills are now worth thousands, according to WealthyNickel.com, a personal finance blog. A printing error that resulted with duplicate serial numbers was made by the U.S. Bureau of Engraving and Printing and now coin and currency collectors are valuing them at $150,000 for a pair.