Handle rare coins carefully.. Soak the coins in warm distilled water and soap.. Replace the water daily.
Handle rare coins carefully.
Soak the coins in warm distilled water and soap.
Replace the water daily.
Dry carefully.
Wet and freeze the coins.
Remove heavy dirt buildup with long-term oil soaks.
Check on the oil every couple weeks.
Use an ultrasonic cleaning machine.
Use extreme caution with valuable coins.
Pick dirt out of small crevices.
Rub with silver polish.
Wipe with a paste of baking soda and water.
Remove hard deposits with ammonium.
Use extra-harsh treatments as a last resort.
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