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<p>[QUOTE=&quot;dbc99, post: 4683945, member: 101506&quot;]I&#039;ve always wondered what the source of black spots or streaks on some gold MS coins are. Could people who are more informed chime in on various sources of problems on MS coins? What exactly are bagmarks and how are they caused?</p><p><br /></p><p>For example - this is a coin graded MS63 by NGC, and the spots don&#039;t look like wear or any sort of copper toning to me, and most don&#039;t seem like bag marks (at least the way I understand them)</p><p>It really only pops up in certain lighting conditions as well, I didn&#039;t see these many marks in the shop where I bought it a few years back.</p><p>[ATTACH=full]1152736[/ATTACH] </p><p>[ATTACH=full]1152737[/ATTACH] </p><p><br /></p><p>Here&#039;s another coin where I&#039;ve observed it - this Russian 10 rouble is more like an XF/AU coin I guess, and the strike is actually quite nice, but the spot on the head and cheek is a major detractor to the beauty. Seems a bit unusual to have such concentrated wear on one location[ATTACH=full]1152738[/ATTACH][/QUOTE]</p><p><br /></p>

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