Message:

<p>[QUOTE=&quot;GDJMSP, post: 2939188, member: 112&quot;]They do and have been doing the very same thing for decades with chemicals. But, an experienced eye can always tell it has been done. This is because the treated area always looks different than the rest of the coin, even when the treated area is &quot;feathered in&quot;.</p><p><br /></p><p>So assuming you could do it with a plasma cleaner, you pretty much also have to assume the same problem would still exist.</p><p><br /></p><p>For example, remove a spot or a stain on a coin and what do you end up with ? Yes, the dark spot or stain is gone, but in its place you now a light colored spot, a spot that is lighter in color than the rest of the coin. So all you have done is to exchange a dark spot for a light spot. In other words you have gained nothing.[/QUOTE]</p><p><br /></p>

Your name or email address:

Do you already have an account?

• No, create an account now.
• Yes, my password is:
• Forgot your password?

Stay logged in