1955 Doubled Die Lincoln Penny
You’re going to see a lot of doubled die pennies on this list because it happens to be one of the more common (although still not frequent) minting mistakes seen in coins. About 20,000-24,000 of these coins were originally released, although experts believe their numbers have dwindled to 10,000-15,000. It’s theorized that these pennies made it into circulation by passing inspection on an overnight shift where there wasn’t proper supervision. Regardless of how it happened, thousands of coins were released into circulation in 1955 with obvious double imprinting on the words “Liberty” and “In God We Trust.” You can easily turn one of these pennies into a small windfall by selling them on eBay. A recent sale for one of these pennies earned the original owner nearly $2,000!