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#1
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PSA Set Registry Calculations
Posted By: Eric B
How are the set ratings and grade points calculated? They don't make sense. Let's use an easy set to calculate. |
#2
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PSA Set Registry Calculations
Posted By: Jerry Hrechka
Not all cards in PSA Set Registries are equal. Some cards have a higher "WEIGHT" which can range from 1 to 10. For example a common T206 would have a weight of 1, while the T206 Honus Wagner has a weight of 10. So a common PSA5 would have 5 x 1 = 5 Grade Points while a PSA2 Wagner card would have 2 X 10 = 20 Grade Points. |
#3
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PSA Set Registry Calculations
Posted By: Eric B
OK, I see that now. The card "weightings" is on a different screen. I assumed incorrectly that since all N28's are equal in population, the weighting is the same. But they give HOF's a higher weight with Anson the highest of all. |
#4
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PSA Set Registry Calculations
Posted By: Jerry Hrechka
Set Rating is GPA X %Complete = Set Rating. On My PSA Horrors of War Set I have a GPA of 4.55 x 61.81% Complete = Set Rating of 2.81. |
#5
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PSA Set Registry Calculations
Posted By: Eric Brehm
Just in case anyone is interested in the precise details, the Set Rating is not quite equal to the Grade Point Average (GPA) multiplied by the Percent Complete, as stated above, although it is approximately equal to that in some cases. |
#6
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PSA Set Registry Calculations
Posted By: JimB
The weighting also does not (understandably since it would be very complex) factor in condition rarity. For example, the N28 Comisky is extemely tough in high grade. |
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