The product is a Fantastic Four #4 comic book from May 1962, graded CGC 3.0. This issue features the first appearance of the Silver Age Sub-Mariner and includes characters such as Stan Lee, Jack Kirby, and the Fantastic Four. The comic book is a part of the US Comics tradition, published by Marvel Comics in the Silver Age era. It is a single issue in English language, making it a valuable collectible for fans of superhero comics.