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Is there a third party grading company rarity quota?
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<p>[QUOTE="TypeCoin971793, post: 4602714, member: 78244"]Because, in the business strike world, that’s basically how it is. Proofs and NIFC coins will be highly biased towards 68-70.</p><p><br /></p><p>Imagine you have a bag of silver dollars. All of the coins are struck by the same dies, go through the same machinery, get thrown into the same bag, and are all jostled by the movements of the bag.</p><p><br /></p><p>Of the jostling of the bag is normal and not excessive in any way, then we can reasonably assume few of the coins would get royally chewed up, so few would grade 60/61. Those at the bottom of the bag which were victim of higher potential-turned-kinetic energy from the chute would see more damage, so your 60-62 coins would be found there. The rest of the bag would be filled with nicer pieces with some receiving the occasional nasty hit. Based on the nature of heavy coins colliding with each other, the majority will be 63-64, with more and more entering this grade level each time the bag is thrown around. A good many would be spared harsh abuse based on how the coins fell in the bag and stacked themselves, and these would be your 65s. Statistically, the chances of having fewer hits decreases staggeringly each grade point higher. The max grade you find might be a 67 or 68, and there will only be a couple in the thousand coins.</p><p><br /></p><p>If you plotted the numbers in each grade level, it would be a roughly bell-like distribution, with a leftward bias centering around 63/64. The results you quote do not surprise me in the least.[/QUOTE]</p><p><br /></p>
[QUOTE="TypeCoin971793, post: 4602714, member: 78244"]Because, in the business strike world, that’s basically how it is. Proofs and NIFC coins will be highly biased towards 68-70. Imagine you have a bag of silver dollars. All of the coins are struck by the same dies, go through the same machinery, get thrown into the same bag, and are all jostled by the movements of the bag. Of the jostling of the bag is normal and not excessive in any way, then we can reasonably assume few of the coins would get royally chewed up, so few would grade 60/61. Those at the bottom of the bag which were victim of higher potential-turned-kinetic energy from the chute would see more damage, so your 60-62 coins would be found there. The rest of the bag would be filled with nicer pieces with some receiving the occasional nasty hit. Based on the nature of heavy coins colliding with each other, the majority will be 63-64, with more and more entering this grade level each time the bag is thrown around. A good many would be spared harsh abuse based on how the coins fell in the bag and stacked themselves, and these would be your 65s. Statistically, the chances of having fewer hits decreases staggeringly each grade point higher. The max grade you find might be a 67 or 68, and there will only be a couple in the thousand coins. If you plotted the numbers in each grade level, it would be a roughly bell-like distribution, with a leftward bias centering around 63/64. The results you quote do not surprise me in the least.[/QUOTE]
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Is there a third party grading company rarity quota?
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