Posted By:
RayBNot scientific by any means but a trend none the less.
I have a 50% PSA graded T206 set, mostly low grade (1,2,3's) I have a few 4's and 5's and this is what I found.
5 PSA 5's Series 350 or later
1 PSA 5 Series 150 (McQuillan Ball In Hand)
11 PSA 4's Series 350 or later
2 PSA 4 Series 150 (Bull Durham, Wiltse No Cap)
I also have a couple each of 4's and 5's that are either EPDG or Old Mill.
RayB