Flat Back
Flat Back. A uniface piece with no rim or border and obviously no design or wording on the reverse. Plaques that are identified as having a flat back are in contrast to those that have a backplate, or those that are cast hollow and exhibit some form of the obverse design on the back (like a shell). For a struck piece a flat back is made from a jack die. See uniface.
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