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<p>[QUOTE=&quot;Hunt1, post: 1425563, member: 25971&quot;]In professional grading (TPG&#039;s) views, NGC see&#039;s a little bit of verdigriss as OK. Some cases it can be removed, and still fetch a numerical grade. In other&#039;s only partially of it can be removed, in that case it would probably be environmental damage. In other cases, all of it can be removed, but it affected the surface, and it will still receive a details grade.</p><p><br /></p><p>So it all depends on how far the verdigriss has already affected the surface, relating to value.[/QUOTE]</p><p><br /></p>

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