Penny Errors to Look For: A Collector's Checklist

Lincoln pennies are the most commonly searched coins for errors, and for good reason — billions have been produced since 1909, creating countless opportunities for mint errors. Knowing exactly which errors to look for turns casual pocket change checking into a productive treasure hunt.

What This Means

Penny errors encompass any manufacturing defect on Lincoln cents from any era: Wheat pennies (1909-1958), Memorial pennies (1959-2008), and Shield pennies (2010-present). Each era has its own known varieties and error types that collectors actively seek.

What to Look For

• Doubling on "LIBERTY," "IN GOD WE TRUST," and the date
• Off-center strikes with the date still readable
• Die cracks running through lettering or Lincoln's portrait
• Cuds at the rim — raised blobs where die metal broke away
• Wrong planchet — a penny that looks the wrong size or color
• Clipped edges — missing portions of the rim

Common Mistakes to Avoid

• Calling machine doubling a "doubled die" — they are very different in value
• Assuming copper-colored pennies from after 1982 are errors — both zinc and copper were used that year
• Overlooking the reverse for errors — check both sides
• Not using adequate magnification — a loupe is essential
• Cleaning a penny before checking it — always examine first

What Affects Value

Penny error values vary enormously. Minor die cracks may add only cents, while major doubled dies or wrong planchet errors can be worth significant premiums. The specific date, mintmark, error type, and condition all factor into value.