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<p>[QUOTE=&quot;medoraman, post: 24882929, member: 26302&quot;]A chemical like water or acetone that cannot attack the surface of a coin is what I call safe conservation. Sometimes a coin needs to have harsher chemicals to truly save it from destruction, like if the toning is turning black and will become corrosion, then something like EZest might be appropriate, in appropriately skilled hands. </p><p><br /></p><p>A novice using anything but distilled water or pure acetone is simply cleaning, and most likely will end very badly.[/QUOTE]</p><p><br /></p>

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