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<p>[QUOTE=&quot;900fine, post: 355686, member: 6036&quot;]And the nature of the crud they&#039;re removing.</p><p>&nbsp;</p><p>Recently on this board, someone posted a &quot;conservation of the month&quot; - a $2.5 Libbie. It had some stuff ON the surface which has not REACTED WITH the surface. So NCS found a suitable non-oxidizing solvent and got the stuff off without damaging the surface.</p><p>&nbsp;</p><p>Fair game.</p><p>&nbsp;</p><p>They took an ugly coin and made it beautiful. All good.[/QUOTE]</p><p><br /></p>

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