Price history & market evidence
PriceCharting guide history
Dated guide estimates for this edition, separate from completed sales.
1 dated observation—one point does not establish a trend. Last recorded 2026-10-06. Source record #2424601
Price observations belong to this edition. Guide estimates, catalog references and completed sales are separate kinds of evidence.
| Grade | Amount | Evidence | Recorded |
|---|---|---|---|
| 10.0 | $8,437.00 | PANEL_PROFITS · grade_10_0_valueguide | 1959-06-01 |
| 4.0 | $72.01 | PANEL_PROFITS · grade_4_0_valueguide | 1959-06-01 |
| 6.0 | $279.99 | PANEL_PROFITS · grade_6_0_valueguide | 1959-06-01 |
| 8.0 | $907.89 | PANEL_PROFITS · grade_8_0_valueguide | 1959-06-01 |
| 9.2 | $6,489.74 | PANEL_PROFITS · grade_9_2_valueguide | 1959-06-01 |
| 9.6 | $7,139.00 | PANEL_PROFITS · grade_9_6_valueguide | 1959-06-01 |
| 9.8 | $389.86 | PANEL_PROFITS · grade_9_8_valueguide | 1959-06-01 |
| RAW | $35.25 | PANEL_PROFITS · ungraded_valueguide | 1959-06-01 |
Reading this edition’s market
Compare the same cover, printing and grade before setting a bid. A raw guide or a higher-grade price does not establish a slab’s value. Include selling fees, shipping and the depth of completed-sale evidence when assessing an exit price.
The table includes 8 guide observations and 0 catalog references. These are reference values, not guaranteed sale proceeds.
Graded population
CGC records 42 graded copies for Challengers of the Unknown #8 (1959). Population is the number recorded by this grading source, not the total print run or all surviving copies.
The Man Who Stole the Future
The Challengers) are visited by their honorary member June and her friend Marie, who has inherited an ancient castle in Mordania, in which she has found, in a secret compartment, a scroll. The Challengers are intrigued by the scroll, and when they decode it, they decide to check the castle out. In the catacombs beneath the old heap, they find a box, open it, and get sprayed with an alchemical youth serum. Ace and Rocky are rejuvenated back to about junior-high-school age. While the team is distracted, Drabny enters the room, steals the box, and escapes through a hidden door. When the Challengers pursue him on foot, Drabny uses his Elemental Helmet to open the ground under their feet. He gets away.
Drabny rejuvenates himself and takes over Mordania, residing now in the royal palace, another ancient castle set within the capital city. Prof and Red infiltrate this base but get captured. Mary, June, Ace, and Rocky then rescue them from Drabny's prison. They recover the age reducing spray, seemingly left behind in great haste by Drabny, and escape from the palace into the capital city. Drabny has left town, with some troops, to confront some government troops, out in the hills. Conventional tanks approach Drabny's position, where he has at least five "Star Cars", armed with futuristic weapons. The Challengers arrive before the Mordanian Tank Corps, and amid some very kinetic fighting, in which some heavy tanks are lofted skyward, Ace Morgan manages to get aboard Drabny's personal vehicle, and douse him with Youth Serum. Morgan dons the Elemental Helmet and gets the levitated government tanks safely back on the ground, then captures Drabny, alive. The Challs give him a brisk spanking before turning him over to the authorities.
Afterward, Ace Morgan tells Marie and June that Drabny is imprisoned, the Youth Serum supply is exhausted, and the helmet and goggles have been destroyed. | Appearing1 = **Featured Characters:** * Challengers of the Unknown) ** Walter "Prof" Haley), record-setting deep-sea diver ** Lester "Rocky" Davis), wrestling champion ** Matthew "Red" Ryan), famed mountain climber ** Kyle "Ace" Morgan), war hero and top jet pilot **Supporting Characters:** * June Robbins) **Antagonists:** * Drabny) ** his troops **Other Characters:** * Marie, Mordanian heiress **Locations:** * Mordania **Items:** * Alchemical Elemental Helmet: Confers the power of Mind Over Matter. With it, the wearer can open up the ground and burrow through the earth, or send large objects flying around the area, or disintegrate lava rock, or telekinetically fling a platoon of armored tanks high into the air. * Alchemical Youth Serum, skin contact makes a person 10 to 20 years younger, but without repeated treatments it wears off in less than one day. * Alchemical Future-vision Goggles, allow the wearer to scan and duplicate the technology of the future. * Drabny's D-Ray, vehicle-mounted disintegrator * Drabny's Levitation Ray, vehicle-mounted antigravity weapon **Vehicles:** * Challengers' yellow delta-winged jet plane * Drabny's topless coupe * Drabny's Star Cars, armed with those antigravity inducers and disintegrating rays. Star Cars don't fly but they're very fast.
| StoryTitle2 = The Prisoners of the Robot Planet | Synopsis2 = While piloting their plane the Challengers) lose control of it and it's forced to land, on the ground they meet an alien named Juhl who comes from a world where their robots have taken over the planet. Juhl has come seeking the Challengers aid. Accepting the mission they travel to Juhl's aid, where the group clash with the robots, taking control of their leader Kra and spray the world's robots with sand, immobilizing them all. With their mission complete Juhl returns them home.
| Appearing2 = **Featured Characters:** * Challengers of the Unknown) ** Walter "Prof" Haley) ** Lester "Rocky" Davis) ** Matthew "Red" Ryan) ** Kyle "Ace" Morgan) **Supporting Characters:** * Juhl **Antagonists:** * Kra) **Other Characters:** * **Locations:** * Zuna **Items:** * **Vehicles:** *
| Notes = * This issue is reprinted in Challengers of the Unknown Archives Vol. 2 (Collected). | Trivia = | Recommended = | Links =
Creative credits
Writers: Jack Kirby, Ed Herron, Jack Kirby, Dave Wood
Interior art: Jack Kirby, Jack Kirby
Source records & attribution
Panel Profits keeps each source identity attached to its edition record.
COMICBASE: comicbase:224104
GCD: 15052
PANEL PROFITS: 2424601