Comic Title: World's Finest Comics #163
Publisher: DC (National Periodical Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: December 1966
On Sale Date: October 25, 1966 Newsstand Date October 25, 1966
Source: House Ad, Action Comics #344, Page 14

Newsstand Date October 25, 1966
Source: Direct Currents, Swing with Scooter #4, Page 17

Copyright Date October 25, 1966
Source: Library of Congress, Periodicals 1966

Frequency: Monthly, with the exception of Jan., April and July
Cover Price: $0.12
Page Count: 32
Editor: Mort Weisinger

Title: "The Duel of the Super-Duo"
Pages: 18

Feature(s):
Superman (of Earth-1)
Batman (of Earth-1)

Writer: James Shooter
Penciller: Curt Swan
Inker: George Klein

Reprinted In:
Showcase Presents:World's Finest Vol. 3 TPB (2010)

Feature Character(s)

• Superman (last appearance in Justice League of America #50; next appearance in Action Comics #344)
• Batman (last appearance in Justice League of America #50; next appearance in Action Comics #344)

Villain(s)

• Jemphis and his robots (no further appearances)
• Two crooks in a Crimemobile (no further appearances)

Other Character(s)

• Zardin the Boy Marvel, Dr. Chill, Aeroman, Windlass, and other alien heroes (no further appearances)

Comments:
Part 2: "The Super-Combat"

Synopsis:
Superman and Batman are taken through a space-warp tunnel to a World of Wonders by an alien named Jemphis. Jemphis gives them a tour of the planet which includes replicas of both heroes' headquarters. Inside Jemphis tries to hypnotize Superman and Batman, making them subserviant to him. Superman avoids the trap, but Batman become a slave.

Before Superman can act against Jemphis, the villain causes the sun to turn from yellow to red. Superman loses his powers and is attacked by Batman. The two are forced to duel in an arena. Batman is ordered to kill Superman, but he can't complete the order. Once he breaks the hypnosis, he and Superman free Jemphis's other prisoners. Jemphis himself falls victim to his own hypnotism and is driven insane.