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Superman #234 cover
Cover: Neal Adams

Superman #234

Feb 1971 · DC · 0.15 USD
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In "How to Tame a Wild Volcano!", Superman answers a call from Clark Kent, who's reporting on a volatile South Seas volcano for WGBS. As the island teeters on the edge of eruption, Superman must confront the natural fury from the air—falling from the sky as a sand creature streaks past. Written by Denny O'Neil and brought to life with Curt Swan’s precise art and Murphy Anderson’s sharp inks, the issue blends science and spectacle. The cover by Neal Adams captures the moment in dramatic, dynamic detail.

Contains 4 stories
How to Tame a Wild Volcano!
15 pp · Superhero
Boysie Harker (villain)Sand creature

In "How to Tame a Wild Volcano!", Superman is called to cover a volcanic eruption, but his efforts to stop the disaster are hampered by sudden weakness whenever a mysterious sand creature appears nearby. As Clark Kent reports on the unfolding crisis, the strange presence of the sand being and its effect on the Man of Steel hint at a deeper mystery beneath the erupting lava.

Weather... Climate...
0.5 pp · Non-Fiction, Math & Science
Prison in the Sky
7 pp
Tron-Et (villain)Ken-DalNali-IlvEd-IlvKrypton

In "Prison in the Sky," Jor-El's experimental rocket and sleep gas are used to imprison criminals in orbit, but when a convict returns to Krypton, he suddenly wields superpowers—leaving Ken-Dal, Nali-Ilv, and Ed-Ilv to confront the mystery behind his transformation. Tron-Et, the enigmatic villain, may hold the key to what truly happened in the sky.

Untitled Non-Fiction story
1 pp · Non-Fiction, Math & Science

ComicBooks.com Value

Our Model is In Beta
Raw (Fine) $11
CGC 9.8 · 8 in census $549
CGC 9.6 · 20 in census $143
CGC 9.4 · 24 in census $82
CGC 9.2 · 20 in census $70
CGC 9.0 · 21 in census $53*
CGC 8.5 · 11 in census $44
Show all 16 grades
CGC 8.0 · 8 in census $39*
CGC 7.5 · 5 in census $34
CGC 7.0 · 8 in census $29
CGC 6.5 · 9 in census $28*
CGC 6.0 · 6 in census $28
CGC 5.5 · 3 in census $20
CGC 5.0 · 4 in census $20
CGC 4.5 · 1 in census $20*
CGC 4.0 · 2 in census $20*
CGC 3.5 · 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

This exact issue on

CGC 9.8 $625 1 listing CGC 6.5 $130 1 listing Raw — FN $22.99 1 listing
Raw / ungraded $27–$195 2 listings
Verified matches for Superman #234 · eBay asking prices, seen 22 days ago

More listings for this title

FN $9 VG $9.6 FN $9.99 VG $9.99 VG $11.99 FN $12.75 VG $14.99 FINE $15
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Cast · 5 characters

Full credits

artist Curt Swan
letterer John Costanza
cover pencils, inks Neal Adams

Reprints

↩ Reprints Strange Adventures #108 (1959), Justice League of America #17 (1963)

Reprinted in Superman #12/1971 (1971), Superman #13/1971 (1971), Supermann #1/1972 (1972), Stålmannen #2/1972 (1972), Superman Supacomic #151 (1972), Superman et Batman et Robin #54 (1973), Superman & Batman Annual #1974 (1974), Supermann #7/1977 (1977), Stålmannen #11/1981 (1981), Supermann #9/1981 (1981), Superman Extra #9 (1984), Super-Homem #4 (1984), Super-Homem #5 (1984), DC Comics Classics Library: Superman: Kryptonite Nevermore #[nn] (2009), Superman - Adieu, Kryptonite ! #[nn] (2016), Lendas do Homem de Aço: Curt Swan #1 (2018), Superman: Kryptonite Nevermore #[nn] (2021), DC Finest: Superman: Kryptonite Nevermore #[nn] (2025), Superman #46, Superman #50, Superman #6, Superman-Bi (1ª Série) #42

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