Coin: 1943 Copper Penny
Estimated Value: $200,000+
Background: Most circulating pennies at that time were struck in zinc-coated steel because copper and nickel were needed for the the war.
About 40 1943 copper cents are known to remain in existence. They were most likely made by accident when copper blanks remained in the press as production began on the new steel pennies
How to spot it: The easiest way to determine if your 1943 cent is copper (and valuable) is to test it with a magnet. If it sticks to the magnet, it is a steel penny, and not valuable. If it does not stick, then you might have hit the jackpot...have a expert authenticate your coin.