Action Comics #241 CGC 4.5 Introduction of the Fortress of Solitude (Cert 5002)

Why it's Hot:

• Introduction of the Fortress of Solitude
• A prototype version of Superman's headquarters was introduced in Superman #17 and the name was mentioned in Superman #58
  

Synopsis:

THE SUPER-KEY TO FORT SUPERMAN THE GREAT JUNGLE HOAX THE STRANGEST CREW IN THE UNIVERSE