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Hairlines vs Die polishing
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<p>[QUOTE="desertgem, post: 1341802, member: 15199"]Die polishing, filing, grinding, depending on the years, will leave a raised line on the lowest portions of the coin , often appearing to stop or pass under devices such as letters, date, etc.</p><p><br /></p><p>"Hairlines" due to cleaning and other PMD will be incluse ( into the surface of the coin ) and will pass over or on the devices.</p><p><br /></p><p>Very minor cases on a flat field can be mistaken for one another without good optical devices. I have had NGC detail a coin for cleaning/hairlines when it was die lines.</p><p><br /></p><p>Jim[/QUOTE]</p><p><br /></p>
[QUOTE="desertgem, post: 1341802, member: 15199"]Die polishing, filing, grinding, depending on the years, will leave a raised line on the lowest portions of the coin , often appearing to stop or pass under devices such as letters, date, etc. "Hairlines" due to cleaning and other PMD will be incluse ( into the surface of the coin ) and will pass over or on the devices. Very minor cases on a flat field can be mistaken for one another without good optical devices. I have had NGC detail a coin for cleaning/hairlines when it was die lines. Jim[/QUOTE]
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