Définition

• Marking.  A British term for upsetting; also called rimming in Britain. The Jones Marking Machine was invented by London mintworker Meredith Jones in 1860 to prepare planchets that are deburred with a thickened edge for high speed coining.
     

  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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