The X-Men #52 (Marvel, 1968)

Covers from the original run of The X-Men (#1-66) almost never come up for sale -- until now, we've seen only three in our 24 years of auctioning comic book art. With no record of how many have survived the past six decades, we can't guarantee we'll ever see another! This x-plosive image showcases full-body portraits of Magneto, Iceman, Marvel Girl (Jean Grey), Angel, and Beast in all their late Silver Age glory as they come under fire from Erik the Red, whose unique horned costume dominates the page. Although the situation seems dire for the mighty mutants, fans can rest assured they'll prevail, as the interior story reveals that Erik the Red is none other than X-Men field leader Cyclops in disguise!