"One coin that individuals may come across is considered an error," said Adamo. "It is the 1944 steel wheat penny that was supposed to be minted in copper. There were less than 50 of these pennies ...

But it could also mean you’ve stumbled upon a secret fortune. The same goes for other coins such as dimes and quarters. You could even discover a coin that is worth hundreds of thousands of ...

In fact such a change could potentially save between $8 million and $39 million per year ... from changing the nickel and dime to a plated steel coin, which would change the coin’s weight ...

The 1943 steel penny remains one of the most famous coins in U.S. numismatic history. With copper required for World War II military equipment, the United States Mint experimented with alternative ...