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<p>[QUOTE=&quot;TypicalCreepahx, post: 1817219, member: 52664&quot;]<b>Q.</b>What causes red spots on pure gold coins (ex first spouse, buffalo panda etc)? Ill give you a free hint the oil theory is nothing but hogwash.</p><p><b><br /></b></p><p><b>A.</b>What is the cause of these &quot;red&quot; spots on our precious oh dear <i>precious</i> gold coins? Well first things first gold is never ONE HUNDRED (100) percent pure. It can be .999 .9999 .99999 but it will never be truly 100% pure so other impurities such as copper for example causes it. Gold does <b>NOT</b> corrode because it does not react with oxygen. The &quot;red&quot; spots are areas that have high levels of <b>copper</b> and because copper is a red colored metal, this shows itself in an area which is less yellow and more red than the rest of the coin. If this area subsequently tarnishes, it would almost certainly go towards a deeper red or brown color. Whenever we have seen red spot, it has always been an area about the size of a pinhead, sometimes with more than one spot on a coin. </p><p><br /></p><p><b>Q. </b>The second part of the question is why wont intercept shield stop this from happening?</p><p><br /></p><p><b>A. </b>Intercept shield is just a coin product, it does not control or fix impurities in any coins. </p><p><br /></p><p>Some information was taken from taxfreegold.co.uk </p><p>Thanks![/QUOTE]</p><p><br /></p>

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