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<p>[QUOTE=&quot;ToughCOINS, post: 2351907, member: 20480&quot;]I&#039;d either call it . . . </p><ol> <li>A mint state coin struck through grease, or <br /> </li> <li>UNC Details, altered surfaces (on one side).</li> </ol><p><br /></p><p>Other than those two possibilities, I don&#039;t see how such a coin would exist.</p><p><br /></p><p>More seriously, aside from the above example in which the difference between grades is so extreme, I think you&#039;re really inquiring about coins which still differ on opposite sides, but not so greatly.&nbsp; Great examples would be many of the mint-marked buffalo nickels, or San Francisco dimes of the 1860&#039;s, where the reverse detail is often a full grade inferior to that of the obverse.&nbsp; </p><p><br /></p><p>This can usually be attributed to poor maintenance / replacement of dies at the mint, and not to wear.&nbsp; In the higher grades . . . strong VF and above, mint luster can be used to determine grade where detail is lacking because of degraded dies, or even because of insufficient strike pressure (not the subject of this thread).</p><p><br /></p><p>&nbsp;- Mike[/QUOTE]</p><p><br /></p>

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