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<p>[QUOTE=&quot;Just Carl, post: 108056, member: 4552&quot;]Please note I&#039;m not saying all green corrosion on coins is NOT Vertigris, I&#039;m just stating that the chances are very, very slim. Being a chem major turned Electrical Engineer, I once did a thesis based on air pollutions effects on everyday substances. Again, the chances of a coin coming into contact with Acedic Acids substancially suficiently consentrated to create a chemical reactions during NORMAL everyday situations is slender. However, this could be done by human interventions. The largest greenish contaminations on copper coins it usually due to the Sulfur air born contaminations. In some areas this is so prevelent that copper piping is not used due to the disentigration of hte copper. Highly Sulfur Oxide contaminations in the soil has made many organizations change to Stainless Steel grounding systems due to the same metalic reactions. Again, I&#039;m not saying some of the coin damage is not Vertigris, I&#039;m just saying it&#039;s abnormal.[/QUOTE]</p><p><br /></p>

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