Split Collar. A special collar which is engraved with letters or ornaments to form raised lettering on struck numismatic pieces. The collar, in three or more segments, rests within a retaining ring in coining position, and must be broken apart after each striking to retrieve the struck piece. A more precise term is segmented collar.
excerpted with permission from
For Artists, Makers, Collectors and Curators
COMPILED AND WRITTEN BY D. WAYNE JOHNSON
Roger W. Burdette, Editor