[whiteymet]

Hi Gang:

I am not a graded collector. But I have a question. Are there ''accepted norms" for percentage increases from one grade to another?

Say for example a 1928 Babe Ruth Exhibit card in a PSA 4 if it is valued or sold for $800 what would the same card in a PSA 5 be worth?

Does it go up 10% per grade? 20%, 30%? I assume the higher you go the higher of percentage increase, but for this exercise lets talk PSA 4 to PSA 5.

PLEASE enlighten me!!

Thanks