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<p>[QUOTE=&quot;GDJMSP, post: 3060289, member: 112&quot;]For decades the rule was quite simple - any problem coin is ungradable. That means the coin cannot be graded, period. This rule was in place and accepted long before any of the TPGs came into existence. And, ALL of the TPGs followed this same rule and swore on everything holy, in writing, that they would never change. That is, until 2007 when they did change.</p><p><br /></p><p>It should be noted that a great many folks, myself included, still disagree with this practice.</p><p><br /></p><p>Since then we have had what are commonly referred to as Details slabs. They will go ahead and put a problem coin into a slab and authenticate it, but they do not grade it per se. Instead they give a adjectival description of the amount of wear, if any, on the coin. Even ANACS and ICG, it&#039;s still basically adjectival even though they do include some numbers.</p><p><br /></p><p>Each different TPG has its own rules, and there differences, as to what makes a coin a problem coin. But they are all similar to this list from PCGS - </p><p><br /></p><p><br /></p><p>No Grades</p><p>PCGS will not grade and encapsulate any coins with the following problems:</p><p><br /></p><p>82&nbsp; &nbsp; Filed Rims&nbsp; &nbsp; Rim(s) and/or edge is filed.</p><p><br /></p><p>83&nbsp; &nbsp; Peeling Lamination&nbsp; &nbsp; Potential for sealing damage.</p><p><br /></p><p>84&nbsp; &nbsp; Holed and/or Plugged&nbsp; &nbsp; Any filled or non-filled hole.</p><p><br /></p><p>86 No Opinion – our experts are unable to determine a coin’s authenticity –</p><p>&nbsp;fee not refunded</p><p><br /></p><p>87 Not Eligible For Service Selected – the coin is too valuable for the</p><p>&nbsp;chosen service level – fee refunded</p><p><br /></p><p>90 Questionable Authenticity – the coin is most likely a counterfeit.</p><p><br /></p><p>91|N-1 Questionable/Artificial Toning (or Questionable Color for copper)</p><p><br /></p><p>92|N-2 Cleaned – surface damage due to a harsh, abrasive cleaning</p><p><br /></p><p>93|N-3 Planchet Flaw - Metal impurity or defect in the planchet – </p><p>depends on severity</p><p><br /></p><p>94|N-4 Altered Surface - Whizzed, harsh cleaning, thumbed over </p><p>(using a pasty substance to cover defects or alter the appearance).</p><p><br /></p><p>95|N-5 Scratch - depends on the severity of the scratch. Rim dent.</p><p><br /></p><p>96|N-6 No Service – coins we do not certify (i.e. medals, some privately </p><p>made issues, etc.) or cannot certify (i.e. over-sized coins)</p><p><br /></p><p>97|N-7 Environmental Damage – i.e. corrosion, coating (lacquer), </p><p>excessively heavy toning, etc.</p><p><br /></p><p>98|N-8 Damage – deliberate surface damage, i.e. graffiti, spot(s) removed, </p><p>etc. – depends on severity</p><p><br /></p><p>99|N-9 PVC (Poly-Vinyl-Chloride) – a plasticizer used to produce vinyl that </p><p>will leach out of the holder and onto the coin, eventually damaging the </p><p>surfaces.[/QUOTE]</p><p><br /></p>

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