The 2004-05 coins commemorated Lewis & Clark’s journey ... But if you do, don’t spend it. These are the most valuable nickels, and they are worth a combined $15 million. Sold at auction: $88,125 Only ...

Pennies with visible mintmarks are cheapest. "Ghost" (barely visible) mintmarks can fetch some money. The plain of the coin version is the most valuable, and the penny with a strong reverse is the ...

The next time you decide to put all your spare change into the nearest Coinstar machine, take a moment to sift through it.

1. Edinburgh City (2011, Scotland). The rarest £1 coin in circulation, selling for up to £34. With a circulation of between ...

These days cashiers might not even give you your change back if it's less than a nickel, as pennies are often forgotten and seen as worthless. But you might want to keep an eye on your pennies, as ...