*DC: One of Jack Kirby’s last projects at DC before absconding to Marvel in the early 1960s was to co-create the Challengers of the Unknown, the tale of four daring adventurers who, having survived a disaster in common, were “Living on Borrowed Time”, and decided to devote that time to the betterment of others. After several appearances in Showcase, Prof, Ace, Red and Rocky graduated to their own series. This first issue is exceedingly rare in any condition, and typically features our heroes traversing dimensions and encountering strange aliens by the bushel, as you do. Kirby art, cover to cover. This copy is FA+. The front and back covers have been separated and retaped together, but remain detached from the body of the book. There is also a small back cover tear, and a small amount of writing on the back cover. However, the cover scene is unharmed and vivid, and the interior pages in decent shape. An item of extreme rarity on sale at £125.