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 #2424560
Price observations belong to this edition. Guide estimates, catalog references and completed sales are separate kinds of evidence.
| Grade | Amount | Evidence | Recorded |
|---|---|---|---|
| 4.0 | $10.95 | PANEL_PROFITS · grade_4_0_valueguide | 1964-10-01 |
| 6.0 | $28.53 | PANEL_PROFITS · grade_6_0_valueguide | 1964-10-01 |
| 8.0 | $120.44 | PANEL_PROFITS · grade_8_0_valueguide | 1964-10-01 |
| 9.2 | $723.26 | PANEL_PROFITS · grade_9_2_valueguide | 1964-10-01 |
| 9.4 | $143.39 | PANEL_PROFITS · grade_9_4_valueguide | 1964-10-01 |
| 9.6 | $796.00 | PANEL_PROFITS · grade_9_6_valueguide | 1964-10-01 |
| 9.8 | $58.86 | PANEL_PROFITS · grade_9_8_valueguide | 1964-10-01 |
| RAW | $6.09 | PANEL_PROFITS · ungraded_valueguide | 1964-10-01 |
| 10.0 | $940.00 | PANEL_PROFITS · grade_10_0_valueguide | 1964-10-01 |
| 9.6 | $45.00 | 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 9 guide observations and 1 catalog references. These are reference values, not guaranteed sale proceeds.
Graded population
CGC records 19 graded copies for Challengers of the Unknown #40 (1964). Population is the number recorded by this grading source, not the total print run or all surviving copies.
The Super-Powers of the Challengers
| StoryTitle2 = The Spy in the Challenger Cave | Synopsis2 =
| Appearing1 = **Featured Characters:** * Challengers of the Unknown) ** Walter Haley) ** Lester Davis) ** Matthew Ryan) ** Kyle Morgan) **Supporting Characters:** * **Antagonists:** * **Other Characters:** * **Locations:** * **Items:** * **Vehicles:** *
| Appearing2 = **Featured Characters:** * Challengers of the Unknown) ** Walter Haley) ** Lester Davis) ** Matthew Ryan) ** Kyle Morgan) **Supporting Characters:** * **Antagonists:** * Multi-Man) **Other Characters:** * **Locations:** * **Items:** * **Vehicles:** *
| Notes = | Trivia = | Recommended = | Links =
Creative credits
Writers: Ed Herron
Interior art: Bob Brown, Bob Brown
Source records & attribution
Panel Profits keeps each source identity attached to its edition record.
COMICBASE: comicbase:224136
GCD: 18656
PANEL PROFITS: 2424560