Spider-Man Vol 1 #19

Revenge of the Sinister Six Part 2 of 6. "Slugfest"

Guest-starring the Hulk. 

Dr. Octopus' secret meeting with his former Sinister Six partners is interrupted by the wondrous wall-crawler! However the web-slinger and his secret ally -- the Sandman --are seriously outnumbered! Luckily, another super-powered...actually gamma-powered...combatant enters the fray: the Hulk!

Wow, Spider-Man and the Green Goliath should mop the floor with the Sinister Six! But Doc Ock's new adamantium arms are a game changer. Could Otto Octavius actually beat the Hulk?

Second story: "Diabolique" Part 1 of 2. 

Peter and Mary Jane tour a new exhibit at the Metropolitan Museum of Art. But there is more to this ancient alchemy-based exhibit than meets the eye!