| Definizione |
- The four basic types are: -� Design errors such as incorrect features. -� Text errors such as wrong name or date. -� Die errors such as a flaw or doubling. -� Production errors such as mis-striking a coin. The first three of these errors result in many copies of an error. The last category results in a single flawed coin that slips through the system. Mistakes happen at any stage of the coin manufacturing process, and collectors look for these. Errors that occur on the die are generally more desirable than errors made at the time of the strike. A doubled die, where an image appears twice slightly offset, is a desired error. Strike errors are generally unique, but all coins struck with a die error have the same characteristic. Examples of mint error types include: A coin struck on an incorrect planchet, delaminated blank, machine doubling of details, doubled punch, mismatched die strike, hub doubling, non-overlapping double strike, offset die misalignment, cud or rim die break, abnormal reeding, oval curved clip, overdate, overlapping curved clip, partial brockage strike, off center second strike over a centered first strike, offset hub doubling, repunched date, railroad rim partial collar, repunched mintmarks or letters, rim-to-rim die crack, extra-thick planchet, thin planchet, rolled-in metal, rotated dies, rotated second strike over a centered first strike, fragments, bow-ties, struck string, wire or cloth, tilted hub doubling, tilted partial collar, broken planchet or blank, incomplete blank, bonded planchet, wrong planchet metal, brockage error, capped die, collar break, a cud, die clash, die crack, coin bumps from die rust, mixed or double denomination strike, edge strike, folded planchet strike, faulty coin alloy, gas bubble included, incomplete cladding, misaligned die, a mule, partly plated, unstruck planchet, uniface strike, overly thick blank, struck by a dirty, grease-filled die, and many more.
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