At first glance, the $1 bill doesn’t seem like a collector’s item. It’s the most common piece of U.S. currency and has remained largely unchanged for decades. However, some $1 bills are extremely rare ...

Spencer Clark is probably the most obscure American ever to appear on U.S. banknotes, and there are a surprising number of people (officially, 53) who've been featured on things like legal tender, ...

How can a $20 bill be worth over $57,000? Because of a printing mishap. The “Del Monte note,” a rare $20 banknote with a banana sticker on it, is currently for sale through Heritage Auctions, a Dallas ...