定義

• Planchet Defect.  An anomaly or malformation in the blank or planchet before it was struck, but which is still evident after the striking. Such planchet defects include holed, clipped, cracked, corroded, split, bent, improperly annealed or upset blanks.

  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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