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Proof Coin Does not Mean Not Touched By Human Hands.
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<p>[QUOTE="GDJMSP, post: 1683225, member: 112"]Lot's folks think the same way, but they are all wrong. There is no material or fabric that is soft enough to not hairline a coin. There are millions of coins, Proof and business strikes alike, that have wipe marks from somebody wiping the coin with a soft material like cotton. And it doesn't have to be dirty or have grit on it to hairline the coin. Cotton can and will hairline a coin all by itself.</p><p><br /></p><p>It has nothing to do with the hardness of the materials. It has to do with luster. Luster is very fragile, extremely fragile. Your finger, a Q-tip, cotton cloth, any cloth, all of these things will leave marks in luster. Luster is a series of microscopic little ridges topped by molecule sized particles that can be disturbed, scratched, broken, worn away, by anything that touches them.</p><p><br /></p><p>There is nothing that you can use to touch the surface of a coin that will not leave traces of that touch behind - nothing ![/QUOTE]</p><p><br /></p>
[QUOTE="GDJMSP, post: 1683225, member: 112"]Lot's folks think the same way, but they are all wrong. There is no material or fabric that is soft enough to not hairline a coin. There are millions of coins, Proof and business strikes alike, that have wipe marks from somebody wiping the coin with a soft material like cotton. And it doesn't have to be dirty or have grit on it to hairline the coin. Cotton can and will hairline a coin all by itself. It has nothing to do with the hardness of the materials. It has to do with luster. Luster is very fragile, extremely fragile. Your finger, a Q-tip, cotton cloth, any cloth, all of these things will leave marks in luster. Luster is a series of microscopic little ridges topped by molecule sized particles that can be disturbed, scratched, broken, worn away, by anything that touches them. There is nothing that you can use to touch the surface of a coin that will not leave traces of that touch behind - nothing ![/QUOTE]
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