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<p>[QUOTE=&quot;TypeCoin971793, post: 3388887, member: 78244&quot;]Here is microscopic evidence of this on a proof coin. The rim of the coin is along the bottom of the image, and die polish lines are evident going from bottom left to top right. But look at the streak perpendicular to these die polish lines. In particular, notice the shape: it has a thin tail and a thick head, meaning it accelerated and then decelerated towards the center of the coin. This is the same shape that a liquid makes when it decelerates upon hitting a wall.</p><p><br /></p><p>I admit I was a doubter until I started playing around with a microscope.</p><p><br /></p><p>[ATTACH=full]900221[/ATTACH]</p><p><br /></p><p>Here is an image of the entire coin. The die polish lines are evident as diagonal lines in the field.</p><p><br /></p><p>[ATTACH=full]900222[/ATTACH]</p><p><br /></p><p>Here are the metal flow lines on a BU Morgan dollar, which attain this structure after many thousands of strikes. The OP’s coin has massive die erosion structures due to having struck many more coing than this die at this point in its life.</p><p><br /></p><p>[ATTACH=full]900223[/ATTACH][/QUOTE]</p><p><br /></p>

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