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<p>[QUOTE=&quot;Cloudsweeper99, post: 181613, member: 3011&quot;]The method sounds like it has merit, and is worth further experimentation rather than condemnation.&nbsp; The major problem that I can see is the potential for small marks on a high grade coins from the tiny particles of dirt hitting the surface at high speed during the process.&nbsp; Other than that, it makes sense to try it.&nbsp; If it can pass the TPG slab test, the method is probably something to consider for certain coins that migh benefit or be upgraded.[/QUOTE]</p><p><br /></p>

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