I know this will probably be impossible to do without pics, but I have a nickel that may be an error. I will try and get pics later. I have a cam, but the cord that connects the cam to computer broke and I haven't found a new one yet. The building on the back of the nickel is copper looking with none of the silver looking metal (nickel?) Could this be a possible planchet error or something? That is the best I can do to describe it.