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Action Comics #350 cover
Cover: Curt Swan & George Klein

Action Comics #350

May 1967 · DC · 0.12 USD
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In "The Secret of the Stone-Age Superman," Superman journeys back to prehistoric times after Perry White uncovers a caveman skeleton clad in a Superman costume, only to find himself stranded when Earth's sun appears red and powerless in that era. Written by Otto Binder and illustrated by Wayne Boring, this 1967 classic blends adventure and mystery with a timeless twist, all rendered in the iconic style of Curt Swan on the cover and George Klein’s inks.

Contains 2 stories
The Secret of the Stone-Age Superman
14 pp · Superhero
SupermanPerry WhiteGuarrVirra

When Perry White uncovers a stone-age skeleton clad in a Superman suit, the Man of Steel journeys back to prehistoric times to uncover the mystery—only to find himself stranded when Earth’s sun appears red, draining his powers.

The Anti-Supergirl Plot!
10 pp · Superhero
Supergirl [Kara Zor-El]Green Arrow [Oliver Queen]Batman [Bruce Wayne]Green Lantern [Hal Jordan]Dick MalverneCindy MorbiltKim Lorne (Supergirl impostor)"Fingers" Cooley (Green Arrow impostor)Carter HagenBatman impostorGreen Lantern impostor

ComicBooks.com Value

Our Model is In Beta
Raw (VG) $10
CGC 9.8 · 2 in census $1,723*
CGC 9.6 · 4 in census $493
CGC 9.4 · 9 in census $275*
CGC 9.2 · 13 in census $159
CGC 9.0 · 2 in census $108*
CGC 8.5 · 5 in census $74*
Show all 14 grades
CGC 8.0 · 5 in census $60
CGC 7.5 · 2 in census $45*
CGC 7.0 · 4 in census $40
CGC 6.5 · 1 in census $34
CGC 6.0 · 3 in census $28*
CGC 5.5 · 2 in census $22*
CGC 5.0 · 2 in census $22*
CGC 4.5 · 3 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

VG $9.99 VG $10.57 VG $12.99 VG $12.99 VG $13.95 VG $14.99 VG $15 VG $17.99
Related listings we couldn't confirm as this exact issue · 34 total · seen 34 days ago

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Full credits

artist, inker Wayne Boring
letterer Joe Letterese
cover pencils Curt Swan
cover inks George Klein

Reprints

Reprinted in Superman Supacomic #101 (1968), Supermann #5/1968 (1968), Supermann #11/1968 (1968), The Superman Family #169 (1975), The Silver Age of Superman The Greatest Covers of Action Comics from the '50s to the '70s #[nn] (1995), Supergirl: The Silver Age Omnibus #2 (2018)

Key issues in Action Comics

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