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<p>[QUOTE=&quot;-jeffB, post: 7498322, member: 27832&quot;]It&#039;s all getting too hypothetical to be of use, I guess, but:</p><p><br /></p><p>More chatoyant (&quot;lustrous&quot;) coins would come from dies with more flow lines. The first few strikes from a die would be &quot;proof-like&quot;, with smooth fields that haven&#039;t had time to accumulate flow lines.</p><p><br /></p><p>I don&#039;t think debris would <i>accumulate</i> on the die, necessarily; each individual bit would likely be carried away after one or a few strikes. But each new bit would tend to move along the same directions as the old ones, and maybe even be forced into the existing channels as it moves, reinforcing them.</p><p><br /></p><p>The flow lines on the coin <i>are</i> ridges, I think, although if there are a bunch of them close together it&#039;s hard to distinguish parallel ridges from parallel channels.[/QUOTE]</p><p><br /></p>

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