CGC 6.0 with Off-White to White Pages. Major Bronze Age key written by Chris Claremont with artwork by John Byrne and Terry Austin and a cover by John Romita Jr. and Terry Austin. Features the first appearance of Dazzler (Alison Blaire), along with the first appearances of Sebastian Shaw, Emma Frost (cameo), and Mastermind as Jason Wyngarde, marking the beginning of the iconic Hellfire Club storyline. One of the most important issues from Claremont and Byrne's legendary X-Men run, this book remains a cornerstone Bronze Age Marvel key with enduring collector demand.