IMO Patina is the effects of age on any object- by Mother nature and Father time. Doesnt matter if its rust, tarnish, verdigris, the darkening of a finish on furniture-whatever. It's not related to just ferous or non-ferous metals. Even pottery and artwork. One thing for sure, its not specifically just related to copper, brass or bronze. Damage by humans is another thing altogether.

Last edited by JimT; Sun Jan 26 2014 07:13 AM.