Expert guides to identifying valuable minting errors. Learn what to look for, how to check, and what your coins could be worth.
Scan Your Coin NowA doubled die is one of the most sought-after coin errors. It occurs during the die-making process when the hub impresse...
Error Type GuidesAn off-center strike occurs when the coin blank (planchet) is not properly seated in the collar before the dies come tog...
Error Type GuidesDie cracks and cuds are among the most common mint errors. They occur when a coin die develops cracks from stress and fa...
Error Type GuidesA clipped planchet error occurs when the coin blank (planchet) is not properly cut from the metal strip, resulting in a ...
Error Type GuidesA broadstrike occurs when a coin is struck without the retaining collar that normally holds the coin blank in place and ...
Error Type GuidesA wrong planchet error occurs when a coin is struck on a blank intended for a different denomination or even a foreign c...
Error Type GuidesA die clash occurs when the obverse and reverse dies strike each other without a planchet between them. This transfers f...
Error Type GuidesA struck-through error occurs when foreign material gets caught between the die and the planchet during striking. The re...
Error Type GuidesLamination errors occur when impurities, gas pockets, or improperly mixed alloys in the planchet cause layers of metal t...
Error Type GuidesRepunched mint marks (RPMs) occur when the mint mark was manually punched into the working die more than once, resulting...
Error Type GuidesA mule error occurs when a coin is struck using two dies that were never intended to be paired together. This can involv...
Error Type GuidesDouble struck errors occur when a coin receives two or more impressions from the dies, typically because the coin failed...