Clean coins with vinegar by soaking them in a bowl containing both vinegar and salt. You need dirty (oxidized) coins, a nonmetal bowl, 1/4 cup white vinegar, 1 teaspoon salt, water and paper towels.Continue Reading
Mix the vinegar and salt in a nonmetallic bowl.
Add a few coins to the bowl, and let them soak for 10 minutes.
Rinse the newly cleaned coins in fresh water, and then dry them on paper towels.
Continue to soak the small batches of coins until they are clean and shiny, the oxidation having been removed by the acidic vinegar.