定義

• Pit.  A minute depression in the surface of a numismatic item; a small hole. In casting a small boss in the mold would cause a pit in the casting; a pit in the mold would cause a boss or nodule in the cast piece.  See cast, casting.

  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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