Avengers #129 (Marvel, 1974)

Kang has arrived with a purpose. One of the females in Avengers mansion is about to become a Celestial Madonna, but historic records are incomplete, so he doesn't know if it will be Agatha Harkness, the Scarlet Witch, or Mantis. He captures all but Swordsman, leaving him behind as inconsequential, which may turn out to be a fatal mistake. To be continued in "Giant Sized Avengers #2."

Marvel value stamp is detached 

Grade is 5.5-6.0