Amazing Fantasy #15 (August 1962)

Spider-Man's first appearance, in the last issue of a dying anthology. Jack Kirby penciled the swinging hero with a crook under one arm and Steve Ditko inked it, and the captions already state the series' whole premise: the world may mock "Peter Parker, the timid teen-ager," but it will soon marvel at Spider-Man. For many collectors this is the single most important Marvel cover.