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Mint-made errors

Mint-made errors occur when coins are made incorrectly at the mint, including anything that happens to the coin up until the completion of the minting process. Mint error coins can be the result of deterioration of the minting equipment, accidents or malfunctions during the minting process, or interventions by mint personnel. Coins are inspected during…

Hub and die errors, Strike errors & Notable U.S. coin varieties and errors

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Overview

Planchet preparation errors

Hub and die errors

Strike errors

Numismatic value of error coins

Notable Australian coin varieties and errors

Notable U.S. coin varieties and errors

Notable British coin errors

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Mint-made errors

Nodes68
Edges67
Triples9
Avg. degree1.97
Density0.029412
Components1

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Important terminology

coins coin die errors dies struck error planchet planchets mint may strike sometimes edge occur design missing blank called occurs

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
gasinstance ofimpurities0.80text
dirtinstance ofimpurities0.80text
or grease become trapped under the surface of the metal blankinstance ofimpurities0.80text
creating a weakness or lamination defectinstance ofimpurities0.80text
the 1942/1 U.Sinstance ofOverdate coins0.80text
staplesinstance ofCommon examples include hard objects0.80text
metal shavingsinstance ofCommon examples include hard objects0.80text
and other coins as well as soft objects such as clothinstance ofCommon examples include hard objects0.80text
greaseinstance ofCommon examples include hard objects0.80text

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