What is the most valuable comic book?
Action Comics 1
{'answer_start': array([-1]), 'answer_text': array([''], dtype=object)}
Published on April 18, 1938 (cover-dated June),[4] by National Allied Publications,[5] a corporate predecessor of DC Comics, it is considered the first true superhero comic; and though today Action Comics is a monthly title devoted to Superman, it began, like many early comics, as an anthology.[6]