This product is a vintage comic book published by Marvel in 1975. It is the first appearance of Nightcrawler, Storm, and Colossus in the X-Men series. The comic is a single issue in the Giant Size X-Men series and features the X-Men superhero team. The comic is in English and is from the Bronze Age of comics. It is a key issue and has been professionally graded by Certified Guaranty Company (CGC).