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<p>[QUOTE=&quot;V. Kurt Bellman, post: 3156010, member: 71723&quot;]I do get his point, and it&#039;s about 90-95% correct. But there are things he states as REQUIREMENTS that are mere TRENDS or TENDENCIES. There is only ONE requirement for it to be whizzing - moving metal to create artificial flow lines to synthesize normal &quot;luster&quot;. Polishing DEGRADES and DESTROYS flow lines; it doesn&#039;t CREATE them as whizzing does.</p><p><br /></p><p>There are EVEN multiple grades of nylon bristle. Google (or Bing, as I do) &quot;DuPont nylon types&quot; and read up. Metal brush only? Gimme a break. In my career, I had only been aware of Nylon 6, Nylon 6,6, Nylon 12, and as a substitute with better chemical resistance at higher temperatures, DuPont Hytrel Polyester, oriented and not. Even I was shocked at what new goodies were out there. Lesson? You have to keep up, keep current, not rest on past laurels. The coin doctors keep evolving. Our detection of it must also keep up to date.</p><p><br /></p><p>By the way, ALL of this, all 7 pages of it, are assumptions pending actually looking at the coin in the hand under pretty high magnification, which presumably, only [USER=43130]@C-B-D[/USER] among us has had the opportunity to do.[/QUOTE]</p><p><br /></p>

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