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<p>[QUOTE=&quot;Oldhoopster, post: 7908428, member: 84179&quot;]The oils and chemicals in the fingerprint are different from the normal environmental factors that cause toning.&nbsp; In some cases, the fingerprint can be etched into the surface leaving permanent damage.&nbsp; You can almost think of it as a type of corrosion.&nbsp; That&#039;s why coins with visible&nbsp; fingerprints, especially heavy ones, might get a details grade.[/QUOTE]</p><p><br /></p>

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