Definição

• Slippage.  Overlapping or missing letters on an edge lettered coin or medal; caused by improper use of the castaing machine, or later, the roller die.  See lettered edge, blunders.

  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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