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Action Comics #312 cover
Cover: Curt Swan & George Klein

Action Comics #312

May 1964 · DC · 0.12 USD
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In "King Superman Versus Clark Kent, Metallo," a mysterious alien machine sets off a chain of strange events when it predicts that Supergirl’s powers will be influenced by the letter "LL." As she encounters words containing that sequence—some helpful, others oddly disruptive—her usual confidence is tested in ways she never expected. With dynamic art by Jim Mooney and a striking cover by Curt Swan and George Klein, this 1964 classic blends whimsy and suspense in a uniquely personal challenge for the Girl of Steel.

Contains 2 stories
King Superman Versus Clark Kent, Metallo
14 pp · Superhero
SupermanClark KentLois LaneLana LangPerry WhiteJimmy OlsenLori LemarisMetallo [John Corben] (flashback)

In "King Superman Versus Clark Kent, Metallo," a desperate experiment with Red Kryptonite fractures Superman into two opposing forces: one a godlike tyrant ruling from the Fortress of Solitude, the other a fugitive rebel named Clark Kent, hunted by his own power. As the line between hero and villain blurs, the truth behind their split begins to unravel—leaving only one question: who is really in control?

The Fantastic Menace of the "LL's"
12 pp · Superhero
Supergirl [also appears as Linda Danvers]Lori Lemaris"Lady-Killer" KaneMarilyn DrakeComet the Super-Horse [also appears as Biron]

ComicBooks.com Value

Our Model is In Beta
Raw (VG) $11
CGC 9.8 · 1 in census $1,549*
CGC 9.6 · 5 in census $483*
CGC 9.4 · 10 in census $247
CGC 9.2 · 9 in census $148
CGC 9.0 · 7 in census $92
CGC 8.5 · 6 in census $81
Show all 22 grades
CGC 8.0 · 4 in census $55
CGC 7.5 · 2 in census $41*
CGC 7.0 · 4 in census $34*
CGC 6.5 · 4 in census $29*
CGC 6.0 · 1 in census $25
CGC 5.5 · 5 in census $20*
CGC 5.0 · 1 in census $20*
CGC 4.5 · 1 in census $20*
CGC 4.0 · 2 in census $20*
CGC 3.5 none in existence
CGC 3.0 · 1 in census $20*
CGC 2.5 none in existence
CGC 2.0 none in existence
CGC 1.5 none in existence
CGC 1.0 none in existence
CGC 0.5 · 1 in census $20*
* estimate — limited direct-sales data at this grade
Our model’s value — refined as new sales data arrives · CGC census counts shown where available

More listings for this title

GD $5 GD $8 VG $9 GD $11.95 VERY GOOD $11.99 VG $13.5 VG $13.5 GD $13.95
Related listings we couldn't confirm as this exact issue · 47 total · seen 34 days ago

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Full credits

artist, inker Jim Mooney
cover pencils Curt Swan
cover inks George Klein

Reprints

Reprinted in The Silver Age of Superman The Greatest Covers of Action Comics from the '50s to the '70s #[nn] (1995), Showcase Presents: Supergirl #2 (2008), Supergirl: The Silver Age Omnibus #2 (2018)

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