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<p>[QUOTE=&quot;Insider, post: 2511909, member: 24314&quot;]Now we are getting somewhere as <span style="color: #b300b3">we agree on this.</span>&nbsp; &quot;Chatter&quot; is often used to describe the &quot;original planchet surface impact&quot; (OPSI) or &quot;tumbling marks&quot; from planchet preparation that were not completely struck out on the coin due to many reasons (five come to mind immediately).&nbsp; However, they are not commonly seen on SL quarters but are very common on other coin denominations and types.</p><p><br /></p><p>Polishing does not produce chatter.&nbsp; Nevertheless, I have heard some students use that term to describe the wavy surface of an extremely whizzed or polished coin.[/QUOTE]</p><p><br /></p>

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