Uncanny X-Men # 87 (1974)

 Mastermind and Unus attack Cyclops and Iceman; Marvel Girl frees herself and others from jail and convince the Russians that Blob has a bomb and wants to initiate WWIII; the mutants battle the Mutant Master. Written by Roy Thomas, pencils by Don Heck, inks by Vince Colletta. Cover art by George Tuska. Features a back-up story written by Stan Lee, art by Steve Ditko.

Good condition.