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 #2424527
Price observations belong to this edition. Guide estimates, catalog references and completed sales are separate kinds of evidence.
| Grade | Amount | Evidence | Recorded |
|---|---|---|---|
| 10.0 | $3,546.00 | PANEL_PROFITS · grade_10_0_valueguide | 1959-10-01 |
| 4.0 | $75.00 | PANEL_PROFITS · grade_4_0_valueguide | 1959-10-01 |
| 6.0 | $75.28 | PANEL_PROFITS · grade_6_0_valueguide | 1959-10-01 |
| 8.0 | $390.66 | PANEL_PROFITS · grade_8_0_valueguide | 1959-10-01 |
| 9.2 | $2,727.81 | PANEL_PROFITS · grade_9_2_valueguide | 1959-10-01 |
| 9.6 | $3,001.00 | PANEL_PROFITS · grade_9_6_valueguide | 1959-10-01 |
| 9.8 | $170.68 | PANEL_PROFITS · grade_9_8_valueguide | 1959-10-01 |
| RAW | $15.19 | PANEL_PROFITS · ungraded_valueguide | 1959-10-01 |
| 8.5 | $390.00 | ComicBase · catalog referencecatalog | Date not recorded |
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 1 catalog references. These are reference values, not guaranteed sale proceeds.
Graded population
CGC records 25 graded copies for Challengers of the Unknown #10 (1959). Population is the number recorded by this grading source, not the total print run or all surviving copies.
The Cave-Man Beast
While out looking for Dr. Manning, a missing scientist, June) discovers a giant cave-man, who captures her and goes on a rampage. Learning of the creature the Challengers try to trap it. However, when they come across some of Dr. Manning's formulas, June convinces the giant creature to drink one of the formulas and it surprisingly reverts to Dr. Manning.
| StoryTitle2 = "The Four Faces of Doom" | Synopsis2 = While exploring ancient ruins that the Challengers) visited a year prior, the group find themselves transported to another era where to their surprise the aided and failed in helping a rebellion the year prior. The Challengers then team up with the rebel leader X-2 and save the kingdom from it's tyranical leader before being returned home.
| Appearing1 = **Featured Characters:** * Challengers of the Unknown) ** Walter "Prof" Haley) ** Lester "Rocky" Davis) ** Matthew "Red" Ryan) ** Kyle "Ace" Morgan) **Supporting Characters:** * June Robbins) **Antagonists:** * **Other Characters:** * **Locations:** * **Items:** * **Vehicles:** *
| Appearing2 = **Featured Characters:** * Challengers of the Unknown) ** Walter "Prof" Haley) ** Lester "Rocky" Davis) ** Matthew "Red" Ryan) ** Kyle "Ace" Morgan) **Supporting Characters:** * **Antagonists:** * **Other Characters:** * **Locations:** * **Items:** * **Vehicles:** *
| Notes = | Trivia = | Recommended = | Links =
Creative credits
Writers: Ed Herron, Dave Wood
Interior art: Bob Brown, Bob Brown
Source records & attribution
Panel Profits keeps each source identity attached to its edition record.
COMICBASE: comicbase:224106
GCD: 15263
PANEL PROFITS: 2424527