Is this something new from PWCC? (Upper right part of ad) Maybe it's been there for a while but I never noticed it before.
Some listings have it and some don't?

What does this mean? If you purchase a non verified card even though it is slabbed, there is a possibility it isn't?
https://www.ebay.com/itm/1952-Topps-...p2047675.l2557
https://www.ebay.com/itm/1952-Topps-...p2047675.l2557