Haze
Haze. A somewhat cloudy residue left on a metallic surface after immersion in certain chemicals or cleaners. Benzine, for example, leaves such a residue on a numismatic or medallic item. Also inexpert cleaning often leaves such a residue. Haze can be removed with immersion in denatured alcohol, among other such solvents. Should the haze not be removed it will give a dull and unattractive appearance to the surface of the coin or medal. See cleaned.
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