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<p>[QUOTE=&quot;Kentucky, post: 24660646, member: 33176&quot;]Luster is tricky stuff.&nbsp; I was looking for [USER=112]@GDJMSP[/USER] (to call up a member, use the @ and the member&#039;s &quot;name&quot;) and his illustration as to how when a coin is struck that the metal flows from the center and leaves little &quot;channels&quot; which reflect the light from their sides so that when you wobble the coin under a single source light you see an &quot;hourglass&quot; that rotates around the coin.</p><p>[MEDIA=youtube]ZY9l7Uzz-TY[/MEDIA][/QUOTE]</p><p><br /></p>

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