mold (if cast), as re-engraving a die crates a new variety. Numismatists study these variations. The greatest number of varieties occur in changing the date, somewhatless in the lettering or detail. A major variety can be the addition or deletion of a single word of a single character, or change in a design element; a minor variety would be, for example, a broken die with part of a letter filled. See die variety.
excerpted with permission from
For Artists, Makers, Collectors and Curators
COMPILED AND WRITTEN BY D. WAYNE JOHNSON
Roger W. Burdette, Editor