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 #2405269
Price observations belong to this edition. Guide estimates, catalog references and completed sales are separate kinds of evidence.
| Grade | Amount | Evidence | Recorded |
|---|---|---|---|
| 10.0 | $853.00 | PANEL_PROFITS · grade_10_0_valueguide | 1966-07-01 |
| 4.0 | $11.04 | PANEL_PROFITS · grade_4_0_valueguide | 1966-07-01 |
| 6.0 | $28.23 | PANEL_PROFITS · grade_6_0_valueguide | 1966-07-01 |
| 8.0 | $56.67 | PANEL_PROFITS · grade_8_0_valueguide | 1966-07-01 |
| 9.2 | $300.00 | PANEL_PROFITS · grade_9_2_valueguide | 1966-07-01 |
| 9.4 | $466.65 | PANEL_PROFITS · grade_9_4_valueguide | 1966-07-01 |
| 9.6 | $722.00 | PANEL_PROFITS · grade_9_6_valueguide | 1966-07-01 |
| 9.8 | $656.04 | PANEL_PROFITS · grade_9_8_valueguide | 1966-07-01 |
| RAW | $6.26 | PANEL_PROFITS · ungraded_valueguide | 1966-07-01 |
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 9 guide observations and 0 catalog references. These are reference values, not guaranteed sale proceeds.
Graded population
CGC records 25 graded copies for Superboy #131 (1966). Population is the number recorded by this grading source, not the total print run or all surviving copies.
Lex Luthor, Imp
Mister Mxyzptlk) returns to Earth to plague Superboy). Lex Luthor) seizes the opportunity and builds a machine to siphon off Mxyzptlk's powers and give them to himself. Angry that he was upstaged, Mxyzptlk starts a battle with Luthor with Superboy caught in the middle.
Superboy tricks Mxyzptlk into saying his name backwards, sending the imp home to the Fifth Dimension. Luthor retains his powers though. Superboy tries the same trick on Lex, but even when he says his name backwards, Lex's powers don't disappear. Superboy then examines the machine that gave Lex his power. After completing his analysis, Superboy realizes that since the secret of Luthor's power was first written in machine code; Lex must be made to recite his name backwards in that same code.
Creative credits
Writers: E. Nelson Bridwell, Otto Binder
Interior art: George Papp, George Papp, George Papp
Source records & attribution
Panel Profits keeps each source identity attached to its edition record.
GCD: 20173
PANEL PROFITS: 2405269