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<p>[QUOTE="cdb1950, post: 54649, member: 1735"]Striations from overpolishing are caused by a polishing device actually grinding into the surface of a die and would tend to occur mostly in the fields of the coin, as that would be the highest part of the die and would receive the majority of the polishing. </p><p> </p><p>Whizzing is the polishing of the coin, which would tend to be most prominent on the raised devices because they are the highest points on the coin. From the photos, it looks like these striations are only in the fields and not on the raised devices. </p><p> </p><p>Based on that, I would say that the striations are caused by overpolishing of the die. Overpolishing can cause the light refraction to look different than the normal luster of a coin. If the coin exhibits any wear from circulation, the striations might appear to have wear at the highest points of the groove and no wear at the lowest points, showing as a break in the luster between the grooves.</p><p> </p><p>An overpolished die will not take much away from the value of a coin.</p><p> </p><p>Your dollar looks nice![/QUOTE]</p><p><br /></p>
[QUOTE="cdb1950, post: 54649, member: 1735"]Striations from overpolishing are caused by a polishing device actually grinding into the surface of a die and would tend to occur mostly in the fields of the coin, as that would be the highest part of the die and would receive the majority of the polishing. Whizzing is the polishing of the coin, which would tend to be most prominent on the raised devices because they are the highest points on the coin. From the photos, it looks like these striations are only in the fields and not on the raised devices. Based on that, I would say that the striations are caused by overpolishing of the die. Overpolishing can cause the light refraction to look different than the normal luster of a coin. If the coin exhibits any wear from circulation, the striations might appear to have wear at the highest points of the groove and no wear at the lowest points, showing as a break in the luster between the grooves. An overpolished die will not take much away from the value of a coin. Your dollar looks nice![/QUOTE]
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