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 |
|---|---|---|---|
| 6.0 | $213.47 | PANEL_PROFITS · grade_6_0_valueguide | 1951-07-01 |
| 8.0 | $239.81 | PANEL_PROFITS · grade_8_0_valueguide | 1951-07-01 |
| 9.2 | $480.00 | PANEL_PROFITS · grade_9_2_valueguide | 1951-07-01 |
| RAW | $106.25 | PANEL_PROFITS · ungraded_valueguide | 1951-07-01 |
| 9.6 | $400.00 | 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 4 guide observations and 1 catalog references. These are reference values, not guaranteed sale proceeds.
Graded population
CGC records 28 graded copies for Adventures into the Unknown #21 (1951). Population is the number recorded by this grading source, not the total print run or all surviving copies.
Story synopsis
No saved issue-specific synopsis is linked to this record and publication year.
Source records & attribution
Panel Profits keeps each source identity attached to its edition record.
COMICBASE: comicbase:17582
GCD: 8988
PANEL PROFITS: 2434361