This is a copy of X-Men Vs. the Avengers #1 published by Marvel Comics in 1987.
Newsstand Edition. "Justice for All!" Script by Roger Stern. Pencils by Marc Silvestri. Inks by Joe Rubinstein. Cover by Marc Silvestri and Joe Rubinstein. The Avengers are Earth's Mightiest Heroes and the planet's first and last line of defense against any menace that may threaten her. They never lose. The Uncanny X-Men are mutant outlaws whose heroic deeds are often over shadowed by growing mutant hysteria and prejudice. They look after their own. 32 pages.