I use a mineral oil bath to help remove part of the grime around devices. But it doesn't turn the coin pink. It leaves the coin a natural color:http://imgs.inkfrog.com/pix/coop49/HALF_BATH.jpg
How die he clean just 1/2 of the coin?
Here is a bathed Indian head:
This can only be used on circulated cents with grime on the coin's devices. It will not remove carbon spots/stains/verdigris on coins.
Richard S. Cooper
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