I've got coins soaking in olive oil now that look like crap. Standing liberty half, Indian head cent, and a couple more buffs. Don't know if they will be readible or not.Found out the hard way not to use CLR together with copper and silver coins!
Yes I did. Same place I dug the old key, Walking Liberty half, and several more coins that didn't fair as well. Owner told me he would get in touch with me as soon as they tore they building down. Still finding goodies on that property.