Euro cent errors: telling real mint errors from damage

A genuine euro cent error is made at the mint: a cracked die, a blank that slipped out of position, a clipped or wrong planchet. Discoloration, corrosion, scratches and dents happen later and do not make a coin more valuable. Because 1, 2 and 5 cent coins are copper-covered steel, a simple magnet is a useful first test.

By the Coin Scanner team · Updated 2026-10-13

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What counts as a mint error

A mint error is a coin that left the mint different from its intended design because of a human or mechanical fault during production. That is how the grading service NGC frames it, and the key word is during. Anything that happens after the coin leaves the mint (in a pocket, in the ground, in a washing machine) is damage, not an error.

Keep expectations realistic. Germany's central bank, the Bundesbank, exchanges supposed euro error coins at face value and notes that no catalog values exist yet for euro errors the way they do for old Deutsche Mark coins.

The main error types

Die cracks and die breaks

Striking dies work under huge pressure and can crack. A die crack shows up as a thin raised line, often running through lettering or stars. If a piece of the die breaks off at the rim, metal flows into the gap and leaves a raised, featureless blob called a cud. A line cut into the surface is a scratch, not a die crack.

Double strikes

If a struck coin gets hit a second time, usually slightly shifted, parts of the design appear twice. NGC describes it as multiple images from being struck again off-center.

Off-center strikes

When the blank is not seated properly in the collar, only part of the design lands on it and the rest of the coin stays blank. Collectors look for pieces where the date and denomination are still complete.

Clipped planchets

Blanks are punched from metal strip. If the punch overlaps the end of the strip or a hole already punched, the blank is missing a piece: a straight clip at the strip end, a curved one where it overlapped. NGC treats large clips as mint errors and very small ones only as minor irregularities.

Wrong planchets

A coin struck on a blank meant for another denomination or made of another metal is a wrong-planchet error. A scale and calipers help here: per the ECB, a 1 cent coin should weigh 2.30 g at 16.25 mm and a 2 cent coin 3.06 g at 18.75 mm. A crisp design on a blank that is clearly off on weight or size is worth an expert's look.

Rotated dies

If a die is set at the wrong angle or works loose, the two sides end up out of alignment. NGC only recognizes a rotation of at least 15 degrees as an error; anything smaller counts as normal tolerance. To check, hold the coin top and bottom between two fingers, spin it on the vertical axis and compare it with a normal coin of the same country and denomination.

What is not an error

• Discoloration: reddish, dark or blotchy copper comes from production and storage, according to the Bundesbank, and doesn't affect the coin's status as money.
• Environmental damage: corrosion, green deposits and stains from heat, moisture or pollutants are environmental effects in NGC's categories, not errors.
• Later damage: scratches, dents, bends, holes and engraving all happen after striking. NGC groups them as mechanical damage.
• Cleaning: brushed or polished coins lose collector appeal rather than gaining it.
• 2 euro edge lettering: the Bundesbank says its direction is irrelevant because the edge is lettered before the faces are struck.

The magnet test

The Bundesbank lists the 1, 2 and 5 cent coins as copper-covered steel and strongly magnetic; the 10, 20 and 50 cent coins in Nordic gold are not magnetic, and the 1 and 2 euro coins only weakly. So a copper-colored cent that ignores a magnet deserves a second look. It could be struck on the wrong metal, but it could just as easily be a fake, a toy coin or a foreign coin. A magnet gives you a clue, not a verdict.

The 2007 common-side change

From 1 January 2007 the 10 cent to 2 euro coins switched from a map of the pre-2004 EU to a geographical image of Europe (Italian, Austrian and Portuguese coins only from 2008), according to the ECB. The 1, 2 and 5 cent coins were not part of that change and still show Europe on a globe. A 2015 cent with the "old" design is perfectly normal.

Are 1 and 2 cent coins going away?

Not yet. In March 2026 the German Bundestag closed a petition calling for their abolition, noting that the European Commission is still assessing common rounding rules and a possible halt to issuing them, and that the denominations must stay uniform across the euro area. Even if issuing stopped one day, the coins already struck would not suddenly become scarce.

How to check a cent coin

1. Magnifier: is the odd feature raised (possible die error) or sunk into the surface (more likely a scratch or hit)?
2. Compare it with a normal coin of the same denomination.
3. Weigh and measure it against the ECB specifications.
4. Magnet: 1, 2 and 5 cent coins should pull firmly.
5. Edge: is a clean straight or curved section missing (possible clip), or does the rim look crushed, filed or jagged (likely damage)?
6. Scan it: photograph both sides with Coin Scanner to identify the country, year and mint mark and get an estimated value range.

The app cannot confirm an error. If a coin still looks genuinely unusual after these checks, have an experienced dealer or a grading service examine it before you try to sell it. For scarce designs rather than errors, see our guide to rare 2 euro coins.

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