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Finger print before or after?
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<p>[QUOTE="Scuba4fun777, post: 5193539, member: 75199"]I understand why you’d ask about this particular coin. The fingerprint ridges run right up to the raised features on the surface, which certainly is not characteristic of PMD. </p><p>However, if you look even closer, you’ll see that the fingerprint stains slightly expand as they approach the raised features of the coin. That leads me to believe that contaminant(s) that caused the fingerprint’s discoloration were likely a cutting oil or some other similar product that is designed to spread or penetrate.[/QUOTE]</p><p><br /></p>
[QUOTE="Scuba4fun777, post: 5193539, member: 75199"]I understand why you’d ask about this particular coin. The fingerprint ridges run right up to the raised features on the surface, which certainly is not characteristic of PMD. However, if you look even closer, you’ll see that the fingerprint stains slightly expand as they approach the raised features of the coin. That leads me to believe that contaminant(s) that caused the fingerprint’s discoloration were likely a cutting oil or some other similar product that is designed to spread or penetrate.[/QUOTE]
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Finger print before or after?
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