定義

• Roundel.  (3) Any of a variety of round inserts placed in a box medal or box thaler; often with drawings or colored engravings and made of paper, mica, cloth, porcelain, ivory, or other very thin media, sometimes in multiple views in accordion fold.

  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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