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<p>[QUOTE=&quot;The_Cave_Troll, post: 307144, member: 1674&quot;]We might be having a nomencature issue here.&nbsp; here is a link to a few definitions that specifically designate luster as a feature of business strike coins and NOT proof coinage:</p><p><br /></p><p><a href="http://www.google.com/search?hl=en&amp;defl=en&amp;q=define:mint+luster&amp;sa=X&amp;oi=glossary_definition&amp;ct=title" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.google.com/search?hl=en&amp;defl=en&amp;q=define:mint+luster&amp;sa=X&amp;oi=glossary_definition&amp;ct=title" rel="nofollow">http://www.google.com/search?hl=en&amp;defl=en&amp;q=define:mint+luster&amp;sa=X&amp;oi=glossary_definition&amp;ct=title</a></p><p><br /></p><p>Basically, luster is the visual effect of flow lines on a coin, but a coin struck with highly polished dies (proofs and ultra deep dmpl&#039;s) will have no flow lines to scatter the light; instead the light is merely reflected, which is not luster.&nbsp; Luster develops over the continued use of the die as the metal flowing across them from repeated use causes &quot;damage&quot; to the die, and eventually the luster becomes muted as the flow lines damage the die further to the point that they are so deep that light gets lost in them instead of being properly scattered.[/QUOTE]</p><p><br /></p>

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