Sub-Mariner (1968 1st Series) #68 CGC 9.0

Cover by John Romita. "On the Brink of Madness!", script by Steve Gerber, pencils by Don Heck, inks by Jim Mooney

Namor returns to his underworld realm to find it devastated in the wake of the nerve gas contamination; Fortunately, his subjects are just in a comatose state and amphibian scientists are eager to help them; Namor takes the scientists to Dr. Hydro's island base and then seeks out Dr. Walthers who has been working on a force field device that can protect Atlantis from any other nerve gas contamination; However, the costumed villain Force stands in his way. Namor drives him off and continues his search for Dr. Walthers;

36 pgs., full color. $0.20. Cover price $0.20.