Because of age, rare printings, or interesting features, coin collectors have shelled out serious dough for these 11 dollar ...

Forgotten cash in an old wallet is no longer just a pleasant surprise, it can be a serious windfall if the right serial ...

While most $2 bills are worth face value, some of the less-used currency could be worth significantly more. Depending on the year and how the paper note was circulated, some $2 bills are now worth ...