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<p>[QUOTE=&quot;desertgem, post: 1949183, member: 15199&quot;]Windex-Blue ( tm) original is 95+ % pure water, about 5% isopropyl alcohol, and less than .10 % ethylene glycol derivative. + some water soluble blue dye. The one with ammonia only has enough to stimulate our nose to think &quot;CLEAN!&quot; , nothing else.</p><p><br /></p><p>So I doubt the windex would cause a problem,&nbsp; its the &#039;soft cloth&#039; part. But no worse than using cotton gloves I guess. If it was a MS or high grade coin, yes, the dealer is not aware. If AG-F, I doubt the soft cloth would create any more noticeable wear, and would inform the dealer that chemically it has little or no lightening ability, and if not high enough grade to dip, leave it black.[/QUOTE]</p><p><br /></p>

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