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<p>[QUOTE=&quot;40_mila_kokkina, post: 1955627, member: 59115&quot;]That&#039;s another interesting statement you&#039;ve made but I&#039;m not sure I totally agree with you on it (yet). From my experience it&#039;s perfectly normal for AU and even UNC coins to have no luster left at all. As an example, some totally brown coppers can be high mint state (such as MS-66 or MS-67 grade). The reason is the lack of wear, hits and scuffs. That in combination with exceptional strike and eye appeal can easily make a high grade brown copper specimen. I believe the same can be true for silver coins. Once they oxidize long enough all the luster can be replaced with a grey(ish) covering, or taken a step further in the process will also have partial green on the surface but only in severe cases and may eventually fall into the category of &quot;environmental damage&quot;.[/QUOTE]</p><p><br /></p>

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