Superman #153

From May 1962, Superman #153 features "The Super-Showdown!" splashed right on the cover — and the scene delivers on that promise in style. Curt Swan and George Klein frame a tense Old West-style standoff on a dusty frontier street, with Superman squaring off alone against four uniformed Kryptonian criminals, each armed with a ray-gun and threatening to banish him to the Phantom Zone forever. It's a wonderfully imaginative piece of Silver Age drama that captures the era's flair for high-stakes confrontations with real visual punch.