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Wonder Woman #21 cover
Cover: H. G. Peter

Wonder Woman #21

Jan 1947 · DC · 0.10 USD
📊 ~37,072 copies sold its debut month
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In "The Mystery of the Atom World," Wonder Woman ventures into a hidden microverse born from a newly tested atomic bomb, taking her to Paula's lab where she and her friend uncover a strange realm inside a uranium sample. There, protons take the form of warrior women ruled by the enigmatic Queen Atomia, while neutrons are enslaved robotic beings—revealing a universe far smaller than imagined, yet just as complex. Written by Charles Moulton and illustrated by H. G. Peter, with cover art by H. G. Peter, this 1947 issue blends science fiction and myth in a thrilling first chapter of a cosmic mystery.

Contains 5 stories
[Part 1] The Mystery of the Atom World
12 pp · Superhero
the Holliday GirlsQueen Atomia (villain, introduction)Neutron robots (villains, introduction for all)Atomia's proton followers (villains, introduction for all)

In a story that blends science fiction and superhero adventure, Wonder Woman ventures into a hidden microverse born from an atomic test, uncovering a strange world where protons are sentient women loyal to the tyrannical Queen Atomia and neutrons serve as her enslaved robots. With the Holliday Girls at her side, she must navigate this miniature realm of atomic intrigue, where the laws of physics hide a deeper, more dangerous truth.

Annie Oakley
3 pp · Biography
Annie Oakley
[Part 2] Tide of Atomic Fire
10 pp · Superhero
the Holliday GirlsPaula von GuntherQueen Atomia (villain)Neutron robots (villains)Atomia's proton followers (villains)

In "[Part 2] Tide of Atomic Fire," Wonder Woman and the Holliday Girls find themselves shrunk to microscopic size, trapped by the Neutron robots under the command of the villainous Queen Atomia. With Atomia’s proton followers closing in, the Amazon Princess must seize control of the protons to outwit her captors and lead her allies toward a desperate escape.

Little Red Riding Hood
4 pp · Humor
Little Red Riding Hood
[Part 3] Ruler of the Atom World
14 pp · Superhero
the Holliday Girlsthe AmazonsDean SourpussMalaGerta von Gunthera group of crippled children (introduction for all)an un-named pilot (introduction)Queen Atomia (villain, reforms)Neutrons (villains)Atomia's proton followers (villains)

In "Ruler of the Atom World," Wonder Woman confronts Queen Atomia, a villain whose atomic-scale rampage threatens a small island, forcing her to use the enlarging ray to bring the giantess down to size. With the aid of the Magic Girdle and the compassion of the Amazons, Wonder Woman guides Atomia to Reform Island, where even the most hardened foes may find redemption—though the path to change is far from simple.

ComicBooks.com Value

Our Model is In Beta
Raw (Good) $93
CGC 9.6 · 2 in census $7,087*
CGC 9.4 · 3 in census $6,243
CGC 9.2 · 3 in census $2,780
CGC 9.0 · 4 in census $2,344
CGC 8.5 · 5 in census $1,676
CGC 8.0 · 1 in census $1,106*
Show all 21 grades
CGC 7.5 · 7 in census $888
CGC 7.0 · 6 in census $760
CGC 6.5 · 8 in census $760
CGC 6.0 · 6 in census $532
CGC 5.5 · 10 in census $418
CGC 5.0 · 17 in census $418
CGC 4.5 · 8 in census $359
CGC 4.0 · 3 in census $317*
CGC 3.5 · 5 in census $283*
CGC 3.0 · 2 in census $250*
CGC 2.5 · 3 in census $211
CGC 2.0 · 3 in census $211
CGC 1.5 · 1 in census $133*
CGC 1.0 · 2 in census $111*
CGC 0.5 · 2 in census $87*
* estimate — limited direct-sales data at this grade
Our model’s value — refined as new sales data arrives · CGC census counts shown where available

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Cast · 5 characters

Full credits

artist, inker H. G. Peter
cover pencils, inks H. G. Peter

Reprints

Reprinted in Wonder Woman: The Golden Age Omnibus #3 (2019)

Key issues in Wonder Woman

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