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<p>[QUOTE=&quot;kevin McGonigal, post: 3962661, member: 72790&quot;]Thanks for your experiences. Museums who use this material seem to like it. Are there any examples from them that indicate potential problems? Interestingly, there is a coin business operating on a web site that says they routinely treat their coins upon sale with micro-crystalline before they send them out.[/QUOTE]</p><p><br /></p>

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