Message:

<p>[QUOTE=&quot;SuperDave, post: 2421212, member: 1892&quot;]BadThad is of the opinion they&#039;re permanent. I have had a very little luck with them on a couple of occasions, but they may not have been the classic chemical problems we refer to as &quot;carbon spots,&quot; and the temperatures involved were....high. As in, I was probably flirting with melting the coin completely.[/QUOTE]</p><p><br /></p>

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