Marvel Superheroes Set #3
Scarlet Witch, Hawkeye, Spider-Man, She Hulk, Ultron, and Kingpin
And a few more images from Sanctum Sanctorum Comix
Sets #4 and #5 were never produced.
Marvel Superheroes Set #4
Angel, Cyclops, Invisible Woman, Mystique, Vision, Daredevil, Juggernaut, Vulture, Beast, Hobgoblin, Mandarin, and Iron Man.
Marvel Superheroes Set #5
Aurora, Guardian, Punisher, Snowbird, Cloak, Howard the Duck, Red Skull, Taskmaster, Dagger, Puck, Shaman, and Talisman.