<https://boards.ngccoin.com/topic/425649-buy-the-coin-not-the-holder/#comment-9778896>
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"No, it is not useful; it is harmful.\n \n\n\n\tAU is a singular grade/condition point, just as is MS-70. AU marks the defined beginning of a circulated coin condition. It is a point of reference which cannot be changed without destroying all reliability and consistency in the concept of evaluating coin condition. The  illegitimacies labeled \"AU-55,\" \"AU-53,\" \"AU-50\" are corruptions just as much as MS-73, MS-75 etc. It is merely a greedy squeeze to take in more money for lower quality product from the feeble-minded. Remember \"LU\" \"Slider\" \"Virtually Unc\" and the other in a mutated slime of metastasized numismatic cancers?\n \n\n\n\tI buy for research, so the slab \"grade\" is irrelevant. For many that is not the case, and they are being cheated and abused for the collective avarice of fat-cat perverts.\n \n\n\n\t \n"
<https://boards.ngccoin.com/topic/425649-buy-the-coin-not-the-holder/>