Currently on offer at Mulberry Bank Auctions is this promo photo card with a set of very bad Beatles autographs. Doesn't look like Neil 's work other than perhaps George's signature - the others maybe by Mal? Nice patina on the card.
Those are horrible, another planet away from being real. Definitely not Neal. I'm not familiar enough with Mal to comment.
(PS: Never really liked these 'eyeliner' pics. Must have been something Brian cooked up - hard to imagine the 4 scousers embracing such theatrical accoutrement!)