Definição

• Wearlife.  The length of actual use. Dies are said to have a wearlife which is expressed in the number of pieces struck, or could be struck, from a particular die. This is in contrast to a length of calendar time. A die that could strike 50,000 pieces has a wearlife of that length; this could be accomplished in a week's time or extended over several hundred years. Since it is never known in advance when a die will break, wearlife is an accurate term applied to that number of pieces a die has indeed struck; it is a tenuous term for a fresh, unused 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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