Avengers #55 CGC 9.8 OW/W Pages Crimson Cowl revealed as Ultron-5 (1st appearance). Whirlwind, Radioactive Man, Melter, Klaw & Black Knight appearance.
Avengers #55 CGC 9.8 White Pages Crimson Cowl revealed as Ultron-5 (1st appearance). Whirlwind, Radioactive Man, Melter, Klaw & Black Knight appearance.
Avengers #57, CGC 9.4 White Pages, Marvel 1968, 1st App. Silver Age Vision