page_title: Mint-made errors
section_title: Lamination flaw
hierarchical_section_title: Mint-made errors / Planchet preparation errors / Lamination flaw
context_page_description: Mint-made errors are errors in a coin made by the mint during the minting process. Groups of coins with distinctive characteristics are known as varieties. The term variety applies to coins with both intended and unintended differences while the term error refers only to coins with unintended differences. Nevertheless, not all errors are varieties. Although there may be many identical examples of a some errors, others are unique. For example, there may be many indistinguishable examples of coins with a specific die crack, while off-center strikes tend to be unique. Being unique does not mean that an error is valuable. Although no other coin may be similar to a coin with an off-center strike, off-center strikes happen often enough that buyers can choose from many examples each of which varies slightly from the other.
  Mint error coins can be the result of deterioration of the minting equipment, accidents or malfunctions during the minting process, or intentional interventions by mint personnel. Accidental error coins are perhaps the most numerous and in modern minting are usually very rare, making them valuable to numismatists.
context_section_description: A lamination flaw is a planchet defect that results from metal impurities or internal stresses.  Lamination flaws cause discoloration, uneven surfaces, peeling, and splitting.
caption: Peeled cladding
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