Low $3k
 | 
Mid $9k
 | 
High $38k
  • 1st team appearance of the X-Men
  • 1st appearance of Cyclops
  • 1st appearance of Jean Grey, Marvel Girl, later becomes Phoenix
  • 1st appearance of Iceman
  • 1st appearance of Angel
  • 1st appearance of Beast
  • 1st appearance of Professor X
  • 1st appearance of Magneto
Details
Publisher Marvel
Published September 1963
Written By Stan Lee (1922 - 2018)
Illustrated By Jack Kirby