This is a single issue comic book titled "Crisis On Infinite Earths #1" from DC Comics, part of the DC Universe. It was published in 1985 during the Copper Age of US Comics. The comic features the work of artists and writers George Perez, Marv Wolfman, and Dick Giordano. It is a first printing with a dust jacket and includes the first character appearance. The comic is in high grade condition, rated 9.4 Near Mint or better.