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Posted 11/21/2007 12:51 am
So I've made up groups of coins and am trying a variety of things to clean this group of badly damaged coins.
The results so far;
Soaked in warm soapy water - This didn't seem to do any good.
Soaked in acetone - This didn't do much of anything one way or another.
Soaked in olive oil. - The coins are still soaking. No obvious difference yet.
Ultrasonic cleaning - Believe it or not, this has made a huge improvement in the coins appearance. The ultrasonic waves (tiny bubbles) removed most (if not all) of the "zinc dust" and even some of the underlying rust. The problem is that it took thirty minutes to clean 15 pennies! I don't think I have the patientce to do the few hundred I now have.
The results so far;
Soaked in warm soapy water - This didn't seem to do any good.
Soaked in acetone - This didn't do much of anything one way or another.
Soaked in olive oil. - The coins are still soaking. No obvious difference yet.
Ultrasonic cleaning - Believe it or not, this has made a huge improvement in the coins appearance. The ultrasonic waves (tiny bubbles) removed most (if not all) of the "zinc dust" and even some of the underlying rust. The problem is that it took thirty minutes to clean 15 pennies! I don't think I have the patientce to do the few hundred I now have.
