X-Factor #5 CGC 9.6
1st cameo appearance of Apocalypse! X-Factor cover and story
X-Factor #24 CGC 9.8
1st full appearance of Archangel, X-Factor vs. Apocalypse story
X-Factor #63 CGC 9.8
Original X-Men cover and story, Mariko Yashida appears, 1st Whilce Portacio art