Superman Supacomic #191

In "Duel of the Diamond Demons!", Superman faces a bizarre threat when a criminal acquires a mind-control gun capable of enslaving even the mightiest heroes—using it to capture the Justice League and auction them off to the highest bidder. Written by Gardner Fox and brought to life by Mike Sekowsky’s dynamic art with Bernard Sachs’ inks, this 1975 classic sees the heroes trapped in a high-stakes game of power and greed. The cover, a striking portrait by Nick Cardy, captures the tension of a villain wielding a weapon of absolute control.