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<p>[QUOTE=&quot;ToughCOINS, post: 1987447, member: 20480&quot;]I&#039;ve written this before . . . both services have grading standards, and their graders revisit those from time-to-time.&nbsp; The problem is that they likely only recalibrate when it becomes obvious that they need to . . . in other words, when their assigned grades drift too far from their standards.</p><p><br /></p><p>I have observed both PCGS and NGC &quot;leapfrog&quot; each other several times, in terms of both being most conservative at one time, and most lenient at another.&nbsp; This should concern us, but not surprise us.</p><p><br /></p><p>Over a year ago, I wrote that NGC had apparently tightened up a lot, as they suddenly seemed far more strict than I could ever recall them being before . . . almost like flicking a switch.&nbsp; That abrupt kind of change doesn&#039;t occur accidentally.&nbsp; It probably resulted from a change in policy after a rash of complaints from the marketplace.[/QUOTE]</p><p><br /></p>

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