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<p>[QUOTE=&quot;GDJMSP, post: 174952, member: 112&quot;]I would guess that the die got some grease on it and that that is what caused the roughness in the fields instead of the normal polished finish.</p><p><br /></p><p>As to how they make Proof dies, when a die starts out it is a flat piece of metal. It is then polished. Then the die is hubbed and the design pressed into the surface. They used to use sandblasting, but these days I believe they use lasers which are controled by computer to create the rough finish on the devices that provides us with the frosted cameo effect. The the fields of the die are chrome plated to make them even smoother and even more highly polished. The chrome plating also makes them last longer.</p><p><br /></p><p>The die polishing I was talking about takes place after the dies have been used for a while and need touched up. They use small dremel like tools on the devices to polish out imperfections caused by wear. Based on your previous description I thought you were saying that the edge of the face extended further into the fields than it was supposed to which is why I thought it may have been caused by die polishing. In other words, a bit too much metal removed along the edge of the face.</p><p><br /></p><p>But this is not what your picture shows, and now that I have seen it I understand what you were trying to describe. And if the die got some grease on it in the field area and then struck a coin - that&#039;s exactly the effect it would produce.[/QUOTE]</p><p><br /></p>

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