Quote:
Originally Posted by Gary
I cleaned up the three silver dollars pictured earlier in this thread.I used a toothbrush and baking soda Is that kosher?
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Sorry Gary, that is not a good idea. Both the tooth brush and the baking soda are abrasive and scratch the surface of the coin. As a collector piece it is badly degraded by this as the original surface is destroyed along with any fine details in the process. Polishing a coin does the same thing.
Now you are left with a splashy display piece, but the numistmatic value has been severely dammaged, and the numistmatic value is the greater part of the value in most cases.
They look real nice and sparkly now, but to a collector they are a dammaged coin.
Cleaning with a soapy solution is the only safe way to remove dirt if necessary.
By the way what are the mint marks on those dollars?
Joe