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<p>[QUOTE=&quot;Insider, post: 2385031, member: 24314&quot;]Actually, I always thought a coin treated with baking soda would show obvious evidence of cleaning.&nbsp; Actually, this is NOT ALWAYS THE CASE.&nbsp; I never would believe it but I have seen the technique demonstrated on specific coins in specific grades and I have examined the coins using a stereo microscope and could find no hairlines or evidence of treatment!&nbsp; I steadfastly still believe this is impossible but it will be one of those things that is true in spite of what I believe. <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie20" alt=":banghead:" unselectable="on" unselectable="on" />[/QUOTE]</p><p><br /></p>

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