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Errors and varieties are classified by three divisions to help define when and how they occur. Listed below are the three divisions. Choose which you think applies to your error or variety coin by clicking the link or image, or use the search feature. Also it is very important to learn the coin minting process before looking for mint errors so check out our guide Coin Minting Process


Planchet Division

The Planchet Division errors happen when the alloy is being mixed and during and just after the creation of the planchet, but before the coin is struck by the working dies.

Rolled In MetalDefective PlanchetImproper Alloy Mixture

Plating IssueSplit PlanchetLamination

Clipped PlanchetIncomplete Clip – Blank (Type 1)

Unstruck Blank (Type 2)Incorrect PlanchetOff Metal Planchets

Dual DenominationMissing Clad LayerExtra MetalImproperly Annealed Planchet

Sintered PlanchetBurnishing BallRoller Marks

Unplated PlanchetSplit PlatingBroken Planchet

Wrong Planchet and Off MetalWrong Stock Off MetalTransitional Planchet Errors

Struck On Foreign Planchet


Die Variety Division

Die Variety Mint Error Division

The Die Division occurs during the creation of the die or during the use of the die as it breaks down and begins to crack apart.

Doubled DieDie CrackDie Breaks (CUDs)

Shattered DieDie GougeRepunched Mint Mark (RPM)

Omitted Mint MarkTrail DiesWorn Die

Reengraved Die – Collar Die BreakCollar Die Clash

Transitional Reverses (Wide AM)Misplaced Date MPDDie Chips (BIE Varieties)

Muled Coin DesignsMotto Varieties


Striking Division

Striking Mint Error Division

The Striking Division is mint errors that occur during the strike and can sometimes be dramatic.

Struck ThroughCapped DieStruck Through Capped Die

Multiple StrikeBonded Multiple StrikeBrokage Strike

Uniface StrikeCollar Die ClashBroad Strike

Edge LetteringDie ClashDie Adjustment

Misaligned Die (MAD)Off Center StrikeRotated Die

Strike DoublingStruck On Feeder FingerCollar Die Break

Uniface Strike – Dropped Letter


Miscellaneous:

Waffled Coins

Strike Doubling

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