This is a collectible comic book titled "AVENGERS #225 (1982) MARK JEWELERS KEY! ICONIC ED HANNIGAN COVER FT BLACK KNIGHT". It features popular Marvel superheroes such as Thor, Iron Man, The Hulk, Ant-Man, and The Wasp as part of the Avengers team. The comic book was published by Marvel Comics in 1982 and is part of the Bronze Age era of comics. The iconic Ed Hannigan cover features the Black Knight.