Peroxide is highly oxidizing, so it's going to affect the surface somewhat. I don't usually clean coins unless they literally have crud on them. What are you trying to get off of the coin?
Just to make them a bit more eye appealing . Not one is worth more than the silver 64 . A lot of $1-3 coins.
Acetone will clean crud off. Ez-zest, if done too long will remove any luster remaining on them. That you have to be careful with. If it's just crud, try acetone first. Not fingernail polish remover, real acetone from your local hardware store. Just be careful as acetone is very very flammable.
Yes, f I agree. First assess value and risk. When in doubt consult experts. You can send valuable coins for conservation. If value is low and risk tolerance is high, here's what I do: try warm water and soap next vegetable oil soak, next if you decide to break out the solvents, acetone soak first, then very light and quick dipping. The best advice is to never clean your coins. I am not an expert.
It's easy, type - proper cleaning - into the Search box and hit your Enter key. You'll find more than you want to read
