定義

• Die Bulge.  A raised area on the surface of a struck piece; evidence of a sunken die. This condition is found on dies of extremely long use, or those that have been employed to restrike items. Papal medals, known for use of dies over many years, have suffered from sinking and display the raised surface of the sunken die.  See sink, sunken die.

  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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