Definizione

• Core Inlay.  A manufactured blank containing a separate core with some desirable characteristics within a clad composition. The core inlay can be a magnetic strip or some other material with properties than can be monitored. The primary purpose of such an inlay is to prevent counterfeiting and the ease of detecting genuine specimens. As such it is ideal for large value coins.
  The Polymetallurgical Corporation of North Attleboro, Massachusetts, conceived the idea and prepared test coins with a magnetic core which it trademarked Corelay. The firm is a division of Cookson Group, plc, which also owns Stern Metals, which supplies the U.S. Mint with gold and silver planchets for the American eagle coinage and commemorative coin programs. The firm announced this innovation at the 19th
  Mint Directors Conference, in Warsaw, May 27-30, 1996.

  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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