NNP

Clean Field.  A collector's term for a background surface that has no relief design where, perhaps, there should be some. There is no mintmark, for example, where one should be located. The field is smooth, without any design or texture.

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