Tales of Suspense #89

From 1967, this Marvel double-header pairs Iron Man and Captain America in one of the era's most visually striking split-feature books. Gene Colan and Frank Giacoia's cover delivers the goods immediately: a massive, green-caped villain — the "New Mysterious Melter" — unleashes a devastating beam that visibly melts Iron Man's red-and-gold armor right before our eyes, while a bystander scrambles to safety on a structure overhead. Stan Lee and Gil Kane bring the Iron Man story inside, and with a cover teasing molten armor and a looming threat, the sense of genuine danger for Tony Stark is hard to shake.