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<p>[QUOTE=&quot;GDJMSP, post: 2703789, member: 112&quot;]The question you might want to also consider is - what would the coin look like in 30 years if the verdigris were not removed using Verdi-Care. </p><p><br /></p><p>As for the answer to your question, nobody knows, the product has only existed for a few years. But one thing is certain, verdigris is harmful to coins, it literally eats away the metal. So if it is left on a coin, the coin is absolutely going to be worse off the longer it is left there.</p><p><br /></p><p><br /></p><p><br /></p><p>It&#039;s possible I suppose, but I think it unlikely. I think it more likely that the green coloration is a remnant of the gum (a thin layer if you will) that the acetone could not remove. </p><p><br /></p><p>You might want to try xylene, it is a &quot;hotter&quot; chemical than acetone. It&#039;s still harmless to the coin but it will remove some things that acetone will not.</p><p><br /></p><p>And if that doesn&#039;t work, then a coin dip will.</p><p><br /></p><p>Of course it important to note that no matter what you use, it must always be used correctly.[/QUOTE]</p><p><br /></p>

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