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Marvel Super-Heroes #27 cover
Cover: Jack Kirby & John Verpoorten

Marvel Super-Heroes #27

Jul 1970 · Marvel · 0.25 USD
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In "In Mortal Combat with... Sub-Mariner!", the X-Men face a new threat when the Sub-Mariner himself emerges from the depths, clashing with the team in a battle that tests their resolve. Written by Stan Lee and brought to life with dynamic energy by Jack Kirby, this 1970 issue features Kirby's bold cover art and Chic Stone’s sharp inks, capturing the intensity of the sea-born warrior’s return. A 25-cent comic in a time when superhero stories were shaping a generation, it’s a standout moment in the series’ early run.

Contains 3 stories
In Mortal Combat with... Sub-Mariner!
20 pp · Superhero
DaredevilSub-Mariner [Namor]Warlord Krang

In "In Mortal Combat with... Sub-Mariner!" from Marvel Super-Heroes #27, Namor’s desperate bid to make humanity listen ends in chaos when his legal efforts fail and he deliberately incurs arrest to force a trial. When diplomacy collapses, his rage ignites a rampage that draws Daredevil into a battle he knows he can’t win. The story finds the Sub-Mariner at a turning point—facing the cost of war, the weight of his own legacy, and a threat beneath the waves.

Back from the Dead
10 pp · Superhero
Hulk [Bruce Banner]Thunderbolt RossGlenn TalbotBetty RossRick JonesLeader [Samuel Sterns]HumanoidsLyndon Johnson (cameo)

In "Back from the Dead," the Hulk returns to gamma base after a harrowing escape, only to be imprisoned again as a traitor—despite the president’s recent knowledge of his secret. Reunited with Talbot, Bruce is sent once more to Astra Island for a new test, but this time, the mission is interrupted by a relentless army of Humanoids.

Unus, the Untouchable!
20 pp · Superhero
The X-Men [Professor X (cameo)The AngelThe BeastCyclopsMarvel Girl [Jean Grey]Iceman]Unus (introduction)Mastermind

In "Unus, the Untouchable!", a disillusioned Beast, having quit the X-Men after a violent encounter with a mutant-hating mob, finds himself in the world of professional wrestling—until he crosses paths with Unus, a mutant whose power renders him untouchable. When Unus attempts to join Magneto’s Brotherhood by confronting the X-Men, Beast’s secret machine threatens to amplify the mutant’s already unbreakable defenses, leading to a tense showdown over control, consequence, and the cost of power.

ComicBooks.com Value

Our Model is In Beta
Raw (Fine) $10
CGC 9.8 · 3 in census $976*
CGC 9.6 · 9 in census $289*
CGC 9.4 · 13 in census $167*
CGC 9.2 · 1 in census $118*
CGC 9.0 · 5 in census $96*
CGC 8.5 · 4 in census $79*
Show all 13 grades
CGC 8.0 none in existence
CGC 7.5 none in existence
CGC 7.0 · 1 in census $54*
CGC 6.5 none in existence
CGC 6.0 none in existence
CGC 5.5 none in existence
CGC 5.0 · 1 in census $35*
* 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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Full credits

writer Stan Lee
artist Jack Kirby
letterer Sam Rosen
cover pencils Jack Kirby
cover inks John Verpoorten

Reprints

↩ Reprints The X-Men #8 (1964), Daredevil #7 (1965), Tales to Astonish #68 (1965)

Reprinted in The Incredible Hulk Omnibus #1 (2008), Daredevil Omnibus #1 (2017), Marvel Origins #56 (2025)

Key issues in Marvel Super-Heroes

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