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<p>[QUOTE=&quot;Mark Feld, post: 726305, member: 11467&quot;]It doesn&#039;t matter to me if you tested certain coins or not. That doesn&#039;t change the fact that there are a multitude of ways that coins are AT&#039;d and they don&#039;t all react the same way.</p><p><br /></p><p>I have been told about and/or seen examples of some that appeared to be stable after 10 or more years. But I have also been told about and/or seen others which had obviously changed. In fact, among them were examples that were taken off the market by grading companies in honor of their guarantees.[/QUOTE]</p><p><br /></p>

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