That seller in that link has about 5 or 6 signed Michael Jackson guitars (pickguards). It is interesting to compare the PSA certified example with the verification photo online, looking at screw holes and ending strokes. I am not commenting on the autograph. Empty screw holes are one thing, but one appears moved. They will alter the guard to fit any Strat style guitar - not sure I like that. Altering.
Yes, I know, there are two PSA Jackson pickguards/guitars there - but the other one is worth looking at as well. The second guitars online verification image shows an autograph in very different condition, with smudges. Sellers image show no smudges, but nearby areas currently appear selectively faded. Odd. They do framing too.