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<p>[QUOTE=&quot;mikediamond, post: 72155, member: 1859&quot;]It&#039;s very hard for me to draw a conclusion.&nbsp; The highly polished field of a proof coin can lead to the appearance of doubling where none exists.&nbsp; If the extra border is indeed raised, it could be machine doubling (strike doubling).&nbsp; The fact that both the date and the mintmark are affected and affected in the same manner and direction would be consistent with machine doubling.&nbsp; However, I don&#039;t really see any flat shelving.&nbsp; The surface of the coin appears a bit lumpy, so it could be a mild case of blistered plating.&nbsp; This is not unknown in proofs.&nbsp; I doubt it&#039;s die deterioration doubling, as proof dies are retired after a few thousand strikes.&nbsp; But I can&#039;t eliminate the latter possibility.&nbsp; Sorry I couldn&#039;t be more helpful.[/QUOTE]</p><p><br /></p>

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