Price history & market evidence
Price observations belong to this edition. Guide estimates, catalog references and completed sales are separate kinds of evidence.
| Grade | Amount | Evidence | Recorded |
|---|---|---|---|
| 10.0 | $5,706.00 | PANEL_PROFITS · grade_10_0_valueguide | 1971-01-01 |
| 4.0 | $89.89 | PANEL_PROFITS · grade_4_0_valueguide | 1971-01-01 |
| 6.0 | $209.88 | PANEL_PROFITS · grade_6_0_valueguide | 1971-01-01 |
| 8.0 | $416.22 | PANEL_PROFITS · grade_8_0_valueguide | 1971-01-01 |
| 9.2 | $860.00 | PANEL_PROFITS · grade_9_2_valueguide | 1971-01-01 |
| 9.4 | $1,625.00 | PANEL_PROFITS · grade_9_4_valueguide | 1971-01-01 |
| 9.6 | $4,828.00 | PANEL_PROFITS · grade_9_6_valueguide | 1971-01-01 |
| 9.8 | $4,389.31 | PANEL_PROFITS · grade_9_8_valueguide | 1971-01-01 |
| RAW | $64.70 | PANEL_PROFITS · ungraded_valueguide | 1971-01-01 |
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 1,934 graded copies for Superman #233 (1971). Population is the number recorded by this grading source, not the total print run or all surviving copies.
Superman Breaks Loose
Superman helps out with an experiment involving Green Kryptonite as an alternative power source when the experiment goes haywire, the energy harnessing machine about to explode. Superman tries to contain the explosion, but fails, being knocked out by the force of the blast and by exposure to the Green Kryptonite. Strangely, the explosion also causes all forms of Kryptonite on Earth to transform into harmless iron, which in turn is interpreted as Superman now being totally invulnerable.
Clark Kent is now hired on by Morgan Edge as a television reporter for WGBS, and his first assignment is to cover an experimental mailing rocket that will travel from Metropolis to Los Angeles. When Clark spots some would-be saboteurs who want the rocket for their own purposes, he goes into action as Superman and tries to stop them. However, he begins to notice that his heat vision powers no longer work, as well as a temporary drain on his physical strength powers. As he returns to Metropolis fulfilling his job reporting the rocket launch, a figure resembling Superman made of sand emerges from where he had been laid following the Kryptonite energy machine explosion and starts wandering about.
After graduating from the Memory Center, Jor-El is assigned to the Kryptonopolis Space-Complex, at which he creates an anti-gravity drive and uses it to power a spaceship constructed of gold. But Lara Lor-Van, an astronaut, stows away and causes it to crash on Wegthor, one of Krypton's moons. Jor-El stows away on another rocket three days later, and rescues her.
Creative credits
Writers: Dennis O'Neil, E. Nelson Bridwell
Interior art: Curt Swan, Murphy Anderson
Cover art: Neal Adams
Source records & attribution
Panel Profits keeps each source identity attached to its edition record.
GCD: 23959
PANEL PROFITS: 2335409