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<p>[QUOTE=&quot;desertgem, post: 1190281, member: 15199&quot;]The black is an end stage of toning. If you aren&#039;t going to clean it, then rinse with acetone, air dry, and put in a safe holder. Unless you expose it to a lot of sulfides in the air/dust, it will stay about the same.</p><p><br /></p><p>If you do decide to try and alleviate the black, use a diluted type such as EZest ( jeweluster). Maybe 1 part dip: 5 parts water, this will give you plenty of time to watch it and decide when the color is acceptable, I would stop at a light gray, or when the highlighted parts are getting too shiney, rinse with plenty of water, acetone, and let air dry, put into a safe holder. Using the dip straight is like cutting s birthday cake with a chain saw, if you have experience, just a little messy, first time .......... </p><p><br /></p><p>Yes, it will damage the coin, but it is already damaged, judging from your description. A photo would give a better idea.</p><p><br /></p><p>Jim[/QUOTE]</p><p><br /></p>

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