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<p>[QUOTE=&quot;Burton Strauss III, post: 2666574, member: 59677&quot;]There is a difference between a newish coin in mint plastic that may have developed a slight haze from chemicals in the minting process, and a 100 year old coin that has been subjected to 100 environmental years. Both coins might reveal previously hidden issues.</p><p><br /></p><p>Mike&#039;s old cleaning now retoned is an example of the latter.</p><p><br /></p><p>Which is more likely is what you have to ask yourself and what are the rewards - including preventing further environmental deterioration.</p><p><br /></p><p>You might call NGC to ask what they see and what the risks are.[/QUOTE]</p><p><br /></p>

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