I bought a 1968 Topps #150 Clemente awhile back and it was nice but looked as if it had a surface abrasion on the back.
I just bought a PSA 6 that has the same apparent abrasion in the the exact same location on the back.
I started checking and found a small amount of cards on VCP that has the same apparent defect. It must be a lack of print. Is this a known print variation?
This is an example of a recent PSA 7 sold on EBAY:
https://www.ebay.com/itm/32493162759...p2047675.l2557