This rare and collectible Adventure Comics issue #290 from DC Comics features the 9th appearance of the Legion of Super-Heroes, including Sun Boy (1st appearance/origin), Saturn Girl, Lightning Lad, Superboy (Clark Kent) and Superman. Written by Robert Bernstein and with cover art by Curt Swan, this 1961 Silver Age comic book is a must-have for any serious collector of US Comics. The comic is in very good/fine condition (grade 5.0) and comes boarded and bagged for protection. The story, titled "Secret of the Seventh Super-Hero", is a thrilling adventure that takes the reader on a wild ride through the DC Universe. This single issue format comic book is a true gem for fans of superheroes and the Legion of Super-Heroes in particular. Don't miss your chance to own a piece of comic book history! Please view pictures and if you have any questions don't hesitate to message me, thank you.