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<p>[QUOTE=&quot;Sallent, post: 2529875, member: 76194&quot;]Acetone has revealed some interesting stuff. Some of the dark cabinet toned coins I&#039;ve bought from reliable dealers came out lighter after an Acetone treatment. They were still clearly toned coins, so I don&#039;t think anyone faked it to make it look darker when the toning that was left was still attractive on its own, but obviously some of the material on them was organic. I suspect some of it might be tar deposits from tobacco smoke that accumulated on some of these coins over many decades of not cleaning. It&#039;s probably not that hard to imagine...after all, until the 1980s it was common for a lot of people to smoke in their homes...so you could see how a coin that&#039;s not been cleaned in 80 or 100 years, and sitting in a cabinet or tray, might have picked up a little extra color.[/QUOTE]</p><p><br /></p>

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