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<p>[QUOTE=&quot;-jeffB, post: 1521096, member: 27832&quot;]If you do feel inclined to put a toned coin (AT or otherwise) under your SEM, there are a lot of us who would <i>love</i> to see what you find.</p><p><br /></p><p>For starters, it would be nice to see quantitative confirmation of the relationship between Ag2S layer thickness and color.</p><p><br /></p><p>On a heavily toned MS coin, it would be nice to see the interplay between flow lines and toning-layer thickness and structure.</p><p><br /></p><p>It would be nice to see before-and-after pictures of a coin that gets dipped for varying durations.</p><p><br /></p><p>Ah, if only I could go back to school for materials science... <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie1" alt=":)" unselectable="on" unselectable="on" />[/QUOTE]</p><p><br /></p>

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