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Two coins by NGC both graded the same--big difference
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<p>[QUOTE="halfcent1793, post: 3498076, member: 86853"]A few years ago, I did a study of the grading of large cents and half cents by NGC and PCGS as compared to the grades by EAC standards as given to the same coins in Heritage and Goldberg auction catalogs. There wasn't much difference between the two TPGs. Both were very close at low grades (up to Good) and very high grades (above 63). The grading by both of them was all over the place for coins with EAC grades of VG-EF. In a number of cases there was a 25 point variance. In other words, a coin graded EF by either of the TPGs may be an EF or it may be a nice Fine. </p><p><br /></p><p>To me, the project proved that neither of the TPGs is capable of grading early copper accurately or consistently. I speculate that the reason for this is that their graders don't understand coins struck on a screw press. Another likely explanation is the rarity of the early copper coins. They don't see enough of the coins to get good at grading them. </p><p><br /></p><p>It wouldn't surprise me if the same was true of their grading of early silver and gold.</p><p><br /></p><p>So, buy the coin not the slab, unless you're putting together a registry set, in which case the opposite is true.[/QUOTE]</p><p><br /></p>
[QUOTE="halfcent1793, post: 3498076, member: 86853"]A few years ago, I did a study of the grading of large cents and half cents by NGC and PCGS as compared to the grades by EAC standards as given to the same coins in Heritage and Goldberg auction catalogs. There wasn't much difference between the two TPGs. Both were very close at low grades (up to Good) and very high grades (above 63). The grading by both of them was all over the place for coins with EAC grades of VG-EF. In a number of cases there was a 25 point variance. In other words, a coin graded EF by either of the TPGs may be an EF or it may be a nice Fine. To me, the project proved that neither of the TPGs is capable of grading early copper accurately or consistently. I speculate that the reason for this is that their graders don't understand coins struck on a screw press. Another likely explanation is the rarity of the early copper coins. They don't see enough of the coins to get good at grading them. It wouldn't surprise me if the same was true of their grading of early silver and gold. So, buy the coin not the slab, unless you're putting together a registry set, in which case the opposite is true.[/QUOTE]
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Two coins by NGC both graded the same--big difference
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