One of the most renowned and valuable mistake coins in U.S. history is the 1955 Doubled Die Lincoln penny. The coin's design doubled due to a die misalignment during minting. The date and “LIBERTY” are especially visible, making this error easy to spot without magnification.
Like the 1955 Doubled Die, the 1969-S Lincoln penny doubles in the date and inscription on the obverse. Fewer than 100 instances exist due to its scarcity. As with other rare pennies, counterfeits abound, so consult a coin specialist.
A valuable doubled die penny, the 1972 Lincoln Cent has significant date doubling and inscriptions like “IN GOD WE TRUST.” Collectors want this error, however it's not as rare as the 1955 or 1969-S doubled die pennies.
Only the 1983 Doubled Die Lincoln penny has an inaccuracy on the reverse, particularly in the inscriptions “ONE CENT” and “UNITED STATES OF AMERICA.” Reverse doubling distinguishes this coin from conventional pennies, making it highly collectible.
The 1992 Close AM error occurs in Philadelphia and Denver mint pennies, when the space between the “A” and “M” in “AMERICA” on the reverse side is almost nonexistent. A careful inspection can reveal this minor discrepancy, which can be worth a lot.