Size 11.5 - Air Jordan 5 Retro Pre-Grape Pre-owned With OG Box

This is a really nice pair, but they do have some sort of red mark on the size tag in each shoe. Looks like it was a square, but hard to make out. Not sure what it means. I’ve read that it could be a collector’s mark. Ran them through Check Check just to be sure. The certificate of authenticity is in the photos.