Some of the rarest and most valuable coins in U.S. history owe their worth to minting errors that slipped through unnoticed. Coins like the 1943 Copper Penny, struck in copper instead of wartime steel ...

Add Yahoo as a preferred source to see more of our stories on Google. Peter Gudella via Shutterstock Minting coins isn't exactly an exact science. Even though most ...

Rare coins, mint errors and key dates could turn everyday pocket change into big money. Learn what to look for.

The vast majority of dimes are worth just that—a dime, or ten cents to the dollar. However, one particular dime, featuring an image of U.S. President Franklin Delano Roosevelt, recently fetched ...

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