Definition

• Screw Medal.  A type of box medal in which a medal is cut in half horizontally, the two halves are hollowed out and screw threads are added so the edges may screw back together. Tiny drawings or paintings on paper, mica or such as roundels were placed inside, sometimes these were attached in accordion fold. Knowledge of how the piece unscrews is necessary to open it (all forms of box medals have some kind of hidden release). Such box medals are usually detected by their lighter than normal weight.  See box medal.

  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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