Y'know, in a way, this thing is still suspect to some extent. IIRC, the Grabber that Gene is pictured with on the cover and booklet of Alive! has a skunk stripe and the "negative" headstock pitch. This'n has no stripe and a conventional Gibson headstock pitch. Kiss used to endorse Gibson, so there were always plenty to go around. I'd wager that most of the damage came from Mendoza - if you ever saw him with The Dictators or in the early TS days, he wore a studded belt and wristbands, and always hammered away at the bass. Unless the seller is Gene's pal, it would probably only require the right number of dead presidents to get him to hold and sign it for posterity (and a higher resale).
