This issue has variants.
Indicia title reads "Tales to Astonish Starring the Sub-Mariner
Story is cut by two pages. Original page 7 has been omitted. Original page 8 panel 1 has been deleted. Original page 10, panels 1 and 2 have been deleted.
House Advertisement for Marvel Comics Series (subscription page).
Candy ad by the Baking Company using a one-page comic with Marvel heroes.
Total of 10 one-page advertisements for: Wildfire (toy pinball, Parker Brothers), Saturday Morning (tv, NBC), Shop By Mail (miscellaneous ads, 2 pages), Grit (newspaper, Grit Publ. 1/2 page), Marvel Comics 20th Anniversary Calendar 1981 (calendar, Ed Shukin, 1/2 page), Saturday's Best (tv, ABC), Electronic Marvel (electronic games, Markline), Whoppers (candy, Leaf), The Saga of Johnny West (shoes, Acme Boot Company), Lego Expert Builder Series (toys, LEGO).