The Uncanny X-Men #221 1st App Of Mr. Sinister Marvel Comics 🔑 For Sale

This is a highly collectible comic book featuring the first appearance of Mr. Sinister in The Uncanny X-Men series. It was published by Marvel Comics in 1987 and is a single issue format. The comic book is in English language and belongs to the Copper Age era (1984-1991). The comic book features the X-Men superhero team and includes popular characters like Wolverine (Logan) and Havok. It is a vintage item and comes with features like first printing, key issue, and first character appearance. This comic book is perfect for fans of superheroes, action, and adventure genres.