SINGLE COMICS MARVEL X-Z X-Factor Series 1 #21 PreviousX-Factor Series 1 #20 NextX-Factor Series 1 #22 X-Factor Series 1 #21 X-Factor Series 1 #21 £3.00 Marvel Oct 1987. 1st Print. Simonson, Simonson, Wiacek. NM- 9.2. 36 pages complete Add To Cart Facebook0 Twitter LinkedIn0 Reddit Tumblr Pinterest0