Definição

• Diagnostic Detail.  Distinguishing elements or detail on a numismatic item that identifies it from all other similar varieties. Since varieties differ as a result of some alteration to the die or dies (or their pairing) numismatists look for differences in dates, lettering, figures, ornaments or the devices to distinguish different varieties. A detail – such as a retooled number – which is unique to that variety becomes the diagnostic element that numismatists can identify similar specimens as being of that exact variety
  or not. In a way, diagnostic detail can also be useful in determining genuine from spurious pieces.  See authentication, copies and replicas; dies and diemaking, die variety, errors.

  excerpted with permission from

  An Encyclopedia of Coin and Medal Technology

  For Artists, Makers, Collectors and Curators

  COMPILED AND WRITTEN BY D. WAYNE JOHNSON

  Roger W. Burdette, Editor

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