NNP

Unknown Portrait.  Unidentified person appearing on a numismatic or medallic item. Often the identity of a portrait on a coin or medal is lost and no amount of art or historical research is able to revel this. The portrait must not be a generic design, but obviously a portrait of a once living person whose identity is lost.  See art history.

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