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<p>[QUOTE=&quot;ToughCOINS, post: 3068005, member: 20480&quot;]Some cleaning is detrimental, some is neutral, and some is beneficial, but all are cleaning.</p><p><br /></p><p>As for my definition, I&#039;ve tried pretty hard to think of a simple, all-encompassing definition . . . </p><p><br /></p><p>&quot;<b>The attempted reversal of a natural or unnatural change in the appearance of a coin</b>.&quot;</p><p><br /></p><p><br /></p><p>Regarding the TPG&#039;s categorizing the nature of a cleaning, there are too many methods of cleaning to expect any of the grading services to characterize them other than broadly when returning a coin as cleaned.&nbsp; It is simply not economical for them to identify the specific method of cleaning of a particular coin.[/QUOTE]</p><p><br /></p>

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