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<p>[QUOTE=&quot;Sarawakian, post: 52521, member: 1415&quot;]<img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie5" alt=":confused:" unselectable="on" unselectable="on" /> </p><p>Hello, recently I purchase a coin with some&nbsp; green patina near the edge to the rim.&nbsp; I am going to send these coin to NGC for grading, my question is should I clean that little spot first or leave it alone. I am concern about NGC will not grade the coin with green patina on it, or if I clean it, they will know that I have clean it and return the coin to me..[/QUOTE]</p><p><br /></p>

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