Aged
Aged. Metal in ingot or manufactured form which has had time to tone or oxidize naturally. Aged metal has a surface which is toned without any protection or finish applied and is in contrast to that state which is freshly cast, struck or molded and still bright and shiny. See tone, toning.
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