This is a vintage comic book from the Golden Age of Comics, specifically "Action Comics #24" featuring Superman. It was published by DC Comics in 1940 and is part of the DC Universe. The comic is a single issue in the superhero genre, marking an early appearance of Superman in US Comics. It is a collector's item with a CGC grade of 1.0.

Please note the crack in the top of the acrylic. This does not affect the book part of the case, more so the CGC display card. If you have any further questions, please let me know.