定義

• Multiplying Press.  A hubbing press. An early term for a screw press used to sink dies from hubs, so named because a multiple number of dies could be sunk from
  one hub.
      

  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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