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Leaving corrosion on a coin is no better. Corrosion can hold moisture, fostering even further damage to the coin. There a5re exceptions to every rule. If there's nothing wrong with the coin...then absolutely .... leave it alone .... period.
Chance
Leaving corrosion on a coin is no better. Corrosion can hold moisture, fostering even further damage to the coin. There a5re exceptions to every rule. If there's nothing wrong with the coin...then absolutely .... leave it alone .... period.
Chance
Lots of differences in corrosion, staining, tarnishing, PVC contaminations, toning, dirty, etc. On many coins it is just old fashioned, ordinary dirt and using all sorts of chemicals to remove that is not to smart. Corrosion on coins is actually rare since so many are used and little chance for real corrosion to happen. Using Naptha, lighter fluids, dish soaps, Tomato juices, Olive Oil and all the other (It really works for me) substances is taking chances on how it will be effected later.
True real corrosion is dangerous but even that could be stopped by removing moisture and air from the presence of the coins.
However, as most do, since they are your coins, you could do with them as you think best.



















