The product is a vintage comic book, Avengers #257 from 1985, graded as CGC 9.6 Near Mint+. This key issue features the first appearance of the character Nebula from the Guardians of the Galaxy, making it a valuable collectible for fans of Marvel Comics. The comic, part of The Avengers series, was written by Roger Stern, Tom Palmer, and John Buscema, and includes other notable characters such as Captain America, Zabu, and Ka-Zar. With vibrant color artwork and a classic superhero story set in the Marvel Universe, this single issue is a must-have for comic book enthusiasts.