Just kidding, I recommend this, EZ-EST, the dip works well, I just it on some junk silver I found CRH that will never be worth more than melt but I just wanted to make them look presentable. http://www.ebay.com/itm/like/401011759082?ul_noapp=true&chn=ps&lpid=82 I just don't like how it says "Coin Cleaner" in big letters right on the bottle, sounds like there advertising coin cleaning (which they are )
EZ-EST is what I've used but any walmart dip should do. The kind that comes in a little jar like hair pomade size with a basket insert but acetone should always be the first option then dip if acetone has no effect