WOW!!! Marvel Comics Thor #257 CBCS 8.0 1977 Newsstand Edition, featuring cover art by Joe Sinnott and Jack Kirby. Yes Jack Kirby. This vintage comic book from the Bronze Age era showcases the character Thor in an action-packed adventure within the Marvel Universe. Graded by the Comic Book Certification Service (CBCS), this collectible item is a single issue in English language, with a newsstand variant cover. This comic book is a must-have for fans of superhero genre and collectors of US Comics.