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 #2405364
Price observations belong to this edition. Guide estimates, catalog references and completed sales are separate kinds of evidence.
| Grade | Amount | Evidence | Recorded |
|---|---|---|---|
| 10.0 | $14,305.00 | PANEL_PROFITS · grade_10_0_valueguide | 1957-04-01 |
| 4.0 | $42.00 | PANEL_PROFITS · grade_4_0_valueguide | 1957-04-01 |
| 6.0 | $195.00 | PANEL_PROFITS · grade_6_0_valueguide | 1957-04-01 |
| 8.0 | $1,075.51 | PANEL_PROFITS · grade_8_0_valueguide | 1957-04-01 |
| 9.2 | $1,480.30 | PANEL_PROFITS · grade_9_2_valueguide | 1957-04-01 |
| 9.6 | $12,104.00 | PANEL_PROFITS · grade_9_6_valueguide | 1957-04-01 |
| 9.8 | $11,003.77 | PANEL_PROFITS · grade_9_8_valueguide | 1957-04-01 |
| RAW | $49.45 | PANEL_PROFITS · ungraded_valueguide | 1957-04-01 |
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 31 graded copies for Superboy #56 (1957). Population is the number recorded by this grading source, not the total print run or all surviving copies.
The Secret of Fort Smallville
When an unknown vandal attempts to sabotage a reenactment of a Ft. Smallville Indian battle, Superboy teams up with an Indian youth and his father to find the culprit.
| StoryTitle2 = Clark Kent, Vandal | Synopsis2 = Lana Lang cannot understand why Clark Kent is going around Smallville writing on all Superboy posters, "SUPERBOY IS A SAP".
| StoryTitle3 = A Job for Super-Dog | Synopsis3 = Krypto asks for and gets permission from Superboy to become a solo hero, attending to the troubles of dogs, but eventually comes to realize he wants to be Superboy's pet and partner again.
| Appearing1 = **Featured Characters:** *Superboy) **Supporting Characters:** * Lana Lang) **Antagonists:** * Hal Howard **Other Characters:** * Swift Deer (Johnny Stag) * White Magic (Swift Deer's father) * mayor of Smallville * four historians (James Crane, others) * Smallville H.S. students (Jimmy Jones, others) **Locations:** * Smallville, Kansas ** Fort Smallville (historical site)
| Appearing2 = **Featured Characters:** *Superboy) **Supporting Characters:** * Lana Lang) **Locations:** * Smallville, Kansas
| Appearing3 = **Featured Characters:** * Superboy) **Supporting Characters:** * Krypto), the Superdog **Antagonists:** * two dog-nappers **Other Characters:** * several dogs **Locations:** * Smallville, Kansas
| Notes = * In "Clark Kent, Vandal", an earthquake rocks Smallville. | Trivia = | Recommended = | Links =
Creative credits
Writers: Otto Binder, Jerry Coleman, Otto Binder
Interior art: John Sikela, John Sikela, Curt Swan
Source records & attribution
Panel Profits keeps each source identity attached to its edition record.
GCD: 13464
PANEL PROFITS: 2405364