X-men 1995 fleer ultra holy grail cards. S&G signs and glass started by making the sinister observations set the chromium side of the cards,for some unknown reason before release business was sold. They moved to making the chromium for baskeball cards,nicked named the (holy grail cards) as there some of the rarest cards on earth to find,over twenty years ive only ever seen 1 card which listed for 50k,The standard cards have mr sinister behind the cards.these promos have the plain white with writing on them