World War II pennies were made mostly of steel. Dan Lewis on the rare and oft-faked coppers that made it out of the mint.
Famous 1943 Bronze Cent Error Coin Offered by GreatCollections
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Everything You Need to Know About the 1943 Copper Penny
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Rare Penny Found in Boy's Lunch Box Could Fetch $170,000 at Auction
1943 copper penny, how do i clean??!!