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Posted By: G. Maines

This could be a good starting point. Would you consider adjusting the percentages to accomodate the liklihood that there is more motivation to grade a psa8 than a psa2, and therefore a greater percentage of the existing population of high grade cards have been submitted?

Of course, I have no idea regarding these factors, but as an initial guess, I will offer: for cards graded at 6 or above 50% of the population is slabbed now. PSA4-6 = 25%, below PSA4 = 10%.