X-Men (1st Series) #1 Variation A (2019 Facsimile Edition Cover A by Jack Kirby)

1st appearance of Angel (Warren Worthington III); 1st appearance of Beast (Hank McCoy); 1st appearance of Cyclops (Scott Summers); 1st appearance of Iceman (Bobby Drake); 1st appearance of Magneto; 1st appearance of Marvel Girl (Jean Grey); 1st appearance of Professor X; 1st appearance of X-Men; Origin of X-Men; Kevin Dooley LOC

X-Men

Writer: Stan Lee

Artist: Jack Kirby