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Sheldon Rarity Scale Please Explain.
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<p>[QUOTE="pasasap2, post: 2580457, member: 57975"]I was reading an old post and someone said that the rarity scale used by Sheldon had to do with condition census. My understanding of the scale is that it has to do with survivability probability based on known examples. For instance R-2 would mean that a Large Cent was uncommon, and that it is estimated that less than 5,000 and more than 1,250 coins of that particular variety exist or have survived based on known examples. Some varieties are very common, but very few, if any, are uncirculated; while, others are rare, but more uncirculated examples are known to exist. So, if it was based on condition census, then the rarer variety would be less rare because there are more higher grade coins available for that example at least that is how I would interpret what has been said. Maybe I am misunderstanding what was being said. Does anyone know for sure if the Sheldon Rarity Table is based on Condition Census, and if so what does that mean exactly? Or is it based on survivability probability? Thanks.[/QUOTE]</p><p><br /></p>
[QUOTE="pasasap2, post: 2580457, member: 57975"]I was reading an old post and someone said that the rarity scale used by Sheldon had to do with condition census. My understanding of the scale is that it has to do with survivability probability based on known examples. For instance R-2 would mean that a Large Cent was uncommon, and that it is estimated that less than 5,000 and more than 1,250 coins of that particular variety exist or have survived based on known examples. Some varieties are very common, but very few, if any, are uncirculated; while, others are rare, but more uncirculated examples are known to exist. So, if it was based on condition census, then the rarer variety would be less rare because there are more higher grade coins available for that example at least that is how I would interpret what has been said. Maybe I am misunderstanding what was being said. Does anyone know for sure if the Sheldon Rarity Table is based on Condition Census, and if so what does that mean exactly? Or is it based on survivability probability? Thanks.[/QUOTE]
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