Visual Guide to Centering 50/50 55/45 60/40 65/35 70/30 75/25 80/20 85/15 90/10 —————————————————————————————————————————————————————————————————————————– PSA Grading Standards for Centering PSA 10Front: Between 55/45 and 60/40 or better.Reverse: Must be 75/25 or better.PSA 9Front: Between 60/40 and 65/35 or better.Reverse: Must be 90/10 or better.PSA 8Front: Between 65/35 and 70/30 or better.Reverse: Must be 90/10 or […]