AMAZING SPIDER-MAN #53 (Oct. 1967)
Cover Art by John Romita Sr.
While out on a date with Gwen Stacey at a science symposium, Doc Ock attacks and steals a missile defence system called the “nullifier”. Peter changes into Spidey and fights Ock, recovering the nullifier. Doc Ock escapes but Spidey manages to put a spider-tracer on him.
LaterDoc Ock sets a trap for Spidey. Using his own spider-tracer against him, Ock draws him in to be blown up when a bomb is triggered. Spidey’s spider-sense warns him of danger and he avoids the explosion, leaving Ock to think his plan worked.