The X-Men 1963 #66 - 7.0 - $99.00

• Key event: Last appearance of the original X-Men team in this title.

With Professor X in a coma after warding off the Z'Nox, the X-Men try to reach him and he mentally tells them one word, "Hulk." The X-Men track down the jade giant and Jean's mental powers cause him to revert to Bruce Banner. Banner tells them that he has a machine that may save Xavier but Major Talbot shows up and causes him to transform to the Hulk again. The X-Men follow him into the desert and battle him at the site of an old lab where they are able to procure the piece of machinery that brings Professor X out of his coma. "And they fought happily ever after...??"

On-sale date from 1970 Periodicals, Copyright Office, Library of Congress with a correction factor of plus 28 days.

• - Inside front cover. Ad for a weight gain product from Joe Weider.
• The Mutants and the Monster - End of original X-Men series. Cyclops, Angel, Marvel Girl and Beast next appear in Amazing Adventures (Marvel, 1970 series) #11, Professor X next in The Avengers (Marvel, 1963 series) #88, Iceman next in The Amazing Spider-Man (Marvel, 1962 series) #92, Lorna Dane and Alex Summers next in The Incredible Hulk (1968 series) #150.
• - Located after page 6 of "The Mutants and the Monster" feature.
• - Located after page 6 of "The Mutants and the Monster" feature. Promo to join the Marvelmania International club.
• Awesome Announcements Calculated to Rouse You into a Seething Sea of Lethargy! - Stan Lee's Soapbox; The Mighty Marvel Checklist.
• - Letters from: Guy Lillian III, David Conzo, Dave Ballman, Allan G. Latawill, and Kurt Erichsen. Includes Know Ye These, the Hallowed Ranks of Marveldom. Editorial note explains that the X-Men is being discontinued because "sales didn't warrant continuing the title." While sales figures on the last new issues rose, the X-Men was revived nine months later, but only as a reprint title. It ran continuously until new stories and art began with #94 (August 1975).
• - Total No. Copies Printed (net press run): Average no. copies each issue during preceding 12 months: 405,115.
• - Ad for plastic toy soldiers.
• - Inside back cover. Ad for the Academy for Home Study.
• - Back cover. Ad for the Famous Artists School.