Posted By:
MikeU"I would like to see the data on the number of cards SGC and PSA grade each month in the prewar arena, not shiny, glossy, refracting stuff. I doubt that it is 5x as much, but more to your point, yes, I do beleive they make more than 5x the mistakes."
When looking at pre-war only, the ratio is less than 5 to 1. However, giving PSA the beneifit of the doubt or being PSA positive, one could still consider a 5 to 1 error ratio to be acceptable for pre-war with PSA.