My name is Rich or woodlandrich, this is new to me on scraping computer parts and electronics. I do scrap copper , alum, brass, red brass. But now I came into a bunch of electronics some new and a lot of old radios no one wants to buy, what I can see is a lot of the dials have silver on them they are tarnished, at least I hope it is. I have so much going threw my head with this stuff and want to get a idea of what to do with it, Thanks for the add to this site..