has anyone tried this stuff? an what are your thoughts on it? http://www.ebay.com/itm/MINT-STATE-...418?pt=LH_DefaultDomain_0&hash=item4cf8fa824a
Not used it, it would probably strip off any patina. I suppose it could be OK for coins that have failed the distilled water soak after a couple of years. I don't think I would use it.