Satin Finish. A medium reflective surface between lustrous and dull. On medallic surfaces this is produced by very light scratch brushing. Silversmiths and antique dealers call this surface butler's finish on silver objects from years of light polishing (and minute abrasion). Such a satin finish can be produced chemically by a patented process developed by James H. Reilly of Brooklyn Silver Company. None of these should be applied to coins, however these can be applied to medallic pieces (if so intended by the artist). Satin finish is more reflective than matte; and less reflective than bright dip or glossy luster. See reflectiveness.
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