Definizione

• Scratch Brush.  A medallic finish in which a stiff wire brush of very fine bristles is applied to a surface giving an irregular scratched pattern of extremely fine lines, often performed with other patina procedures. It was also the method of applying a mercury-gold amalgam during firegilding. See brush finish, patina, finish and finishing.

  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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