<https://boards.ngccoin.com/topic/425649-buy-the-coin-not-the-holder/#comment-9778967>
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"Circulation wear is always a continuum. The defined points, adjectives or numbers, are convenient references where distinctions are easily made: 3 letters show; 5 letters show, etc.\n \n\n\n\tThe whole numeric scale is a fraud - it implies accuracy that does not exist, and it was not thought through to create a basic uniformity between each adjective/number.\n \n\n\n\tTPS accuracy/consistency for circulated coins is extremely good. For uncirculated coins, it is poor.\n \n"
<https://boards.ngccoin.com/topic/425649-buy-the-coin-not-the-holder/>