Complete set of 7 issues (prestige format) of the Official Marvel Index to the X-Men. Featured spectacular wrap-around cover art by Walt Simonson, P. Craig Russell, Jim Valentino and John Romita JR in particular. The set includes the complete credits, story and the cover art of each X-Men issues, from issue #1 up to #138, with a few more extras (Classic X-Men, Amazing Adventures issues). Released by Marvel Comics in 1987-1988. Comic books in NM condition, unread copies. Buy in confidence from a fellow comic book collector. International buyers welcome. I will combine shipping.