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<p>[QUOTE=&quot;physics-fan3.14, post: 2346715, member: 19165&quot;]Wow. The coin you posted is so different from the OP&#039;s coin that a meaningful comparison really can&#039;t be made. </p><p><br /></p><p>The coin you linked has beautiful, natural surfaces. It is a proof, and thus is expected to have reflective surfaces (the polished business strike in the OP has mirrored surfaces because it has been cleaned). It is also somewhat unreasonable to compare a circulated business strike to a very high grade proof. </p><p><br /></p><p>As for the toning - on the OP&#039;s coin, the color appears to be a film that rests on the surface (because it is). On the proof you link, the toning is fully integrated into the coin (because it is a reaction of the metal in the coin with the environment - the toning is a part of the coin).[/QUOTE]</p><p><br /></p>

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