Posted By:
peter chaoKing,
Actually CTA did this and issued a grading report that went with each card. But alas the hobby wasn't ready for this and CTA is out of business. They would then average the grades and come to a single number, however, the grading report will list all the numbers.
Now if you see a CTA card graded an 8 it is a true 8 in my opinion.
Peter