I found this cent in circulation, it's much more obvious then a regular brass plated lincoln, this one is really shinny and almost looks like its solid brass. Upon close inspection I discovered there is zinc right under the plating, no copper. But im still not sure what the plating is??? Maybe this came out of some kind of set...anybody know??
Sometimes when the planchets are plated the zinc in solution reacts with the copper and forms brass which may be what you have there. It's not terribly common but not unheard of either.
