Amazing Spider-Man (vol 1) #142 FN

"Dead Man's Bluff" Part 2 of 2. Script by Gerry Conway. Art by Ross Andru (breakdowns), Frank Giacoia (finishes), and Dave Hunt (backgrounds). Cover by John Romita. An angry wall-crawler scours Manhattan looking for Mysterio! The web-slinger's long-time foe has made the grave mistake of using the late Gwen Stacy as one of his illusions! And that's stepping way over the line! But what if Peter's sighting of Gwen was genuine? Hold on, that's impossible! Gwen died several months ago! Or did she? Your friendly neighborhood Spider-Man will dive into that mystery soon enough! But in the meantime, he's giving a piece of his mind to Mysterio! First (cameo) appearance of the Gwen Stacy clone. Cameo appearances by Mary Jane Watson, Aunt May, Glory Grant, Betty Brant, Ned Leeds, Joe Robertson, and J. Jonah Jameson. (Note: This story was reprinted in Marvel Tales 119.) 32 pages. 25c cover price.