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<p>[QUOTE=&quot;zaneman, post: 256371, member: 3970&quot;]Clembo,</p><p>I believe blue ribbon used to contain trichloroethylene, but it is my understanding that the newer bottles do not, as it is now highly regulated. Many many dealers use this as well as coin care, and believe that when the coin gets graded the TPG&#039;s they are often aware that the coin has been coated with oil, coin care, or blue ribbon, but they will slab it anyway, as I believe it helps protect the coin from corrosion. I personally don&#039;t think it would do anything for haze though. </p><p><br /></p><p>I will also add that it is typically used on copper, and personally on the copper coins in my collection, I apply a very light coat of extra virgin olive oil, since I know it doesn&#039;t contain any other chemicals.[/QUOTE]</p><p><br /></p>

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