This is an amazing comic book featuring Superman in the world of Mr. Mxyzptlk. The story title is "The Supergirl of Two Worlds" and it was published in 1961 by DC Comics. The comic book is in a single issue format and is part of the Action Comics series title. The grade of the comic book is 3.0 Good/Very Good and it is a vintage item from the Silver Age (1956-69) era. The language of the comic book is English and it is a part of the DC Universe. The comic book is a collectible item and is perfect for fans of superheroes.