As the first buyer was upset and had this returned, I am disclosing the following:

The card is slabbed "Authentic" because the foil is warping, as seen on the scan. These cards are notorious for having the foil getting warped/pinched, and it was slabbed "Authentic" because the card, frankly, would not grade well because of the foil. I got the autograph graded only, and it is a perfect PSA/DNA Gem MT 10 autograph.