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<p>[QUOTE=&quot;Tom Mackay, post: 233792, member: 4589&quot;]I think it was unfortunately named originally then, simply because I believe for most today the term &quot;polka dot&quot; implies different colours, absent any optical effect. It certainly does for me.</p><p><br /></p><p>That said, I tend to favour tradition &amp; don&#039;t like goofy names meant only to hype something up !</p><p><br /></p><p>To me, &quot;coin spot&quot; suggests a mark impressed upon a piece in a precise circle, whereas &quot;thumbprint&quot; also suggesst impressing but with irregularity.</p><p><br /></p><p>BUT - in the piece I have, the interior indentations are so regularly spaced that looking through to the light one sees an effect like looking through fish-netting!</p><p>Very uniform but soft-edged rather than with a linear definition.</p><p><br /></p><p>I&#039;ve found it extremely difficult to photograph, but I love the effect !</p><p>I&#039;ll start a thread for identifying that piece &amp; hopefully have some decent pics.[/QUOTE]</p><p><br /></p>

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