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<p>[QUOTE=&quot;John Burgess, post: 6590763, member: 105098&quot;]Personally I&#039;ve never gone beyond distilled water. In my opinion it&#039;s a neutral pH and has no contaminants, it works in some cases, mostly on organic solids by absorbing them into dissolved solids into the pure distilled water where a bottled drinking water of neutral pH and chlorines free, that contains dissolved solids wouldn&#039;t have room to take on much of anything. Again though it depends on what you are dealing with, there&#039;s all kinds of junk on coins, most of what I&#039;ve encountered was dirt and grime which distilled water will work fine on and you can leave coins soaking for a long time without issue. If it&#039;s a paint or laquor or glue or anything like that, distilled water wouldn&#039;t touch it. </p><p><br /></p><p>If it&#039;s a toning of some sort or posibly a plastic softener contaminant thats been there forever, distilled water wouldn&#039;t work I don&#039;t think, and I&#039;m not sure if acetone or xylene gets the job done either. </p><p><br /></p><p>A coin dip would probably work but it&#039;s been circulated. You are going to have to wear the coin a while for it to look normal again as its right appearance for the wear and age.[/QUOTE]</p><p><br /></p>

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