Iron Man #121

In "A Ruse By Any Other Name...", Iron Man and the Sub-Mariner uncover Roxxon’s true plan to strip-mine the vibranium core of a mysterious island, leading to a desperate clash against Hale’s forces. With the island’s destruction leaving no trace of Roxxon’s involvement, Tony Stark’s armor fails at the worst moment—only for an unlikely hero to intervene in the depths below. Written by Bob Layton and David Michelinie, with art by Bob Layton and John Romita Jr., and a cover by Bob Layton, this 1979 Marvel classic blends high-stakes espionage with underwater peril.