100% acetone, don't use nail polish remover with may have dyes or perfumes. 100% pure acetone from a hardware store.
The reason it's used is it's a solvent, this will remove oils (like new fingerprints) dirt shmuts and gunk, adhesives, paint, a whole lot of things, and any surface contaminants that may be on there from circulating and neutralize all that.
it doesn't affect toning at all though.
acetone or xylene though, will evaporate. so you'd use it in a covered dish or jar, just enough to cover the coin and cover it so the acetone doesn't evaporate off. change the acetone frequently otherwise you are adding dirt and contaminants to other coins as it gets dirtier.
Similar can be accomplished with distilled water if you are more comfortable with that as a starting point, pure H2O, it's neutral pH, contains no contaminants, and is natures solvent and will take on dissolved solids from the coins you put into it but it will need to soak longer than in acetone.
I started with distilled water, and never gone past it, for most finds from circulation it will do the trick, but it doesn't work on adhesives, gum, stuff along those lines, that's where acetone or xylene come in.
the issue comes with anything used to clean coins that moves away from neutral pH 7 in either direction. anything too acidic or too alkaline has the same affect, it's corrosive to a degree and will damage the surface of the coin.
I'm not a fan of xylene, mostly because the pH varies with P-xylene or M-xylene, O-xylene, it can range from 6.5 up to 8 pH. People say it's safe, but I'm not so sure after looking at the pH of the 3 xylenes, I'd want to be sure it's a 7 pH on the package.
If I HAD to go that far, I might give it that shot though, but honestly I just steer clear of anything besides distilled water, if that doesn't touch it, then it's staying on my coin. LOL.
I would try acetone also if I felt I needed to for an adhesive, but the coin better be worth the effort also, but for the most part I'm just removing dirt from circulated roll finds and a long soak and rise with distilled water has done the job for me.
Edited by Big-Kingdom
03/12/2021 10:56 am