1 Answers
First, if you think your coins might be of any value, do not clean them at all, since you can possibly damage them by soaking in cleaners like vinegar. If you want to clean the coin for some other reason, vinegar should work fine. First, rinse your coins in some cold water to get rid of any dust or grime on the surface. You can also use a toothbrush to remove surface gunk if you wish. Then mix together 1/4 cup of vinegar and 1-2 teaspoons of salt in a bowl that can hold all your coins. Submerge your coins in the solution for a few minutes, rinse them in warm water to remove any vinegar (which could corrode the coins if left on them) and then polish them clean with a cloth or paper towel. If this isn't enough you can try repeating the process and soaking the coins for a little longer.