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<p>[QUOTE=&quot;GDJMSP, post: 656528, member: 112&quot;]But it isn&#039;t inert or harmless at all. It is in fact the culprit that has delayed the issue of the sets by the mint, for it has caused bad spotting and unsightly toning in a short period of time.</p><p><br /></p><p>And that&#039;s the thing, what one might think to be a harmless solution for cleaning turns out to be disasterous after a period of time. And the time period may vary greatly. You just don&#039;t know, cannot know, what will happen because of all the variables. </p><p><br /></p><p>If the mint used one product to clean a batch of planchets or finished coins (as they do the mint sets) and then you use some solution to attempt to clean a coin - the reaction of the 2 solutions on the coin can cause all sorts of things - none of them good. And since you have no way of knowing what the mint used at any given period of time - you have no idea of what to use or not use. It is always a crap shoot.</p><p><br /></p><p>Now of course this only applies to mint state coins. But what about circulated coins ? You have absolutely no idea what that coin may have come in contact with during the course of its life in circulation. How many times may it have gone through a washing machine in somebody&#039;s pocket and been subjected to who knows what kind of detergents, bleaches and various other chemicals - all of them capable of leaving a film or traces of those chemicals behind on the coin. And then you subject it to more chemicals having no idea what the possible chemical reactions will be ?</p><p><br /></p><p>Are you beginning to get the idea of why it is best to just leave coins alone ?[/QUOTE]</p><p><br /></p>

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