THOR (1962) #253

Thor and Ulik make an uneasy alliance and Thor will have to make a costly decision – save the trolls or learn more about where to find Odin. After defeating the troll Ulik in a bitter battle for the ruby eye of a legendary dragon, Thor learns why Ulik is so desperate to gain the trinket. The trolls have accidentally broken open a portal to the realm of a powerful creature named Trogg. The ruby is the only way to seal the gateway again. But Thor has promised to give the ruby to all-knowing Mimir, so that Odin’s whereabouts might be revealed. All of Asgard hinges on his successful return of the ruby.…