Superman's Pal, Jimmy Olsen #82

What a wild scene greets you on this 1965 DC gem — inside a boxing ring, a green-clad Jimmy Olsen has Superman down on the mat and in obvious agony, while a gloating figure in the crowd demands payment on a bet that Superman could be beaten without Kryptonite. Ringside onlookers watch in stunned disbelief as the Man of Steel gasps for mercy, setting up the tantalizing promise of "The Unbeatable Jimmy Olsen!" Curt Swan and George Klein deliver a cover that's equal parts outrageous and irresistible, making this one of those mid-Silver Age issues you can't help but pick up.