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Independent · Challengers of the Unknown · #15 · Modern Age · ID-2424619
Stored prices by grade and source, exactly as recorded. A source with no price for a grade shows a dash.
Your cost basis next to the stored PriceCharting price for the grade you hold
Track your holding in your portfolio. Record your grade (0.5–10.0 or Raw), grading authority (CGC, CBCS, PSA, or Raw), acquisition cost basis, and purchase date to activate real-time equity valuation, unrealized ROI, and capital gains tracking.
Dated PriceCharting snapshots and recorded sales. Nothing is drawn where no dated price exists.
AI-scored · tracking Challengers of the Unknown · refreshes every 2 min
RSI needs 15 dated prices; 1 on file for 9.8.
BB20 is waiting for 20 dated prices for 9.8; no shorter window is substituted.
Market-wide signal (top 4) · Issue-specific signal (bottom 2 · tagged ISSUE)
Challengers of the Unknown #15 demonstrates disciplined liquidity depth and stable sovereign grade spread characteristics across current secondary market trading.
News linked to this book, the Grand Comics Database record, variants and the source of each figure.
Steven Grant
Ryan Sook
Bill Reinhold
James Sinclair
typeset
| Grade | Panel Profits |
|---|---|
| 10.0 | $99.00 |
| 9.8 | $76.41 |
| 9.2 | $29.09 |
| 8.0 | $21.06 |
| 6.0 | $15.02 |
| 4.0 | $6.95 |
| 3.0 | $6.00 |
| 2.0 | $5.00 |
| Raw | $8.46 |
Single-source econometric valuation across 1 verified monthly observation epochs (0Y runway)
Hedonic age factor + census scarcity weighting.
80% Interval: Unmeasured (Insufficient Volatility Sample)
Wholesale realization (45% haircut · ILLIQUID_SPECIALTY)
Relative-value gravitational equilibrium anchored to the foundational genesis instruments of sequential art.
| Grade | Dealer Buy (Bid) | Retail Sell (Ask) | Spread | Underwriting House |
|---|---|---|---|---|
| 6.0 | $4.30 | $16.99 | 74.7% | Khamsin Custodial |
| 4.0 | $1.50 | $7.69 | 80.5% | Khamsin Custodial |
| Raw | $1.90 | $9.29 | 79.5% | Arnveld Capital |
Multi-tier analytical consensus distinguishing public truth, firm posture, desk urgency, and personal exposure
Speculative micro-allocation with high-beta risk/reward characteristics.
Publisher profile coming soon
Variant cover era. Trade paperback culture. Independent movement flourishes. Digital distribution begins.
Census-registered copies anchor pricing. First appearances of characters adapted to screen drive the market.
Dan Thorsland
The recovery of third-party encapsulation and grading expenditures when an asset is acquired at a discount below the physical cost of replacement grading fees, shipping, and insurance.
On the site of an ancient chalk drawing in the English countryside, a Millennium Giant arises just in time to meet Clay Brody. He evacuates a nearby town and climbs aboard the giant's body to hitch a ride. Kenn is at a military installation and becomes convinced that the behemoth is related to local folklore. In the field, Brenda assess unusual energy that is convalescing and Marlon flies a jet dangerously close to get information on any weaknesses. Kenn goes to the library and is briefly met by John Constantine who supports his theory of Ley Lines. The Challengers realize that the being is attracted to energy and they send Clay a Morse Code signal to get to safety before they electrocute the creature. The huge influx of power does not deter the Giant but it does convince him to move south, away from London and other population centers and into the English Channel. Clay displays that he has a small chunk of the being's body. Back in the States, Marlon introduces the Challengers to a Hopi named Tim Blue Star who may have a clue of what's happening. He tells them that this is part of a cycle of purification and that they have no hope. Marlon decides that they must reach out to Superman.
Valuation parity across physical collectible manifestations for Challengers of the Unknown #15.
CGC, CBCS, PSA Universal certified high-grade specimens (9.8 / 9.6 / 9.4). The gold standard for institutional alternative investment.
Official witnessed creator-signed slabs (Yellow label). Valued based on creator historical stature and inscription provenance.
Certified specimens from landmark historical collections (Edgar Church / Mile High, White Mountain, Kansas City, Pacific Coast).
Original newsstand barcode distribution copies. Extremely scarce in high grade due to newsstand rack wear and unsold return pulping.
Regional price test market copies (Canadian 75¢/95¢ variants, Marvel 30¢/35¢ test variants). Highly coveted micro-population rarities.
Exclusively allocated copies requiring retailer orders of 1:25, 1:50, 1:100, or 1:500 standard copies. Immediate manufactured scarcity.
Unslabbed collector copies inspected under standard Overstreet physical guidelines. The primary pool for grading arbitrage.
Alternative artistic interpretations, virgin covers, metal foil, and convention exclusives with dedicated collector followings.
Standard specialty comic shop printings sold through non-returnable distribution. The baseline circulation foundation.
Green label copies with significant manufacturing flaws, unwitnessed signatures, or missing coupons that do not affect the main story.
Purple label copies with professional or amateur color touch, tear seals, piece fill, or spine rebuilds.
Blue/Grey label copies treated exclusively with archival preservation techniques (leaf-casting, rice paper tear reinforcement, solvent wash).
Official second, third, or later printings released to satisfy secondary market sellouts. Distinct cover art and trade dress.
International editions licensed by La Prensa (Mexico), Editora Abril (Brazil), Panini (Europe), or Titan (UK).
Certified printing oddities (missing foil, inverted interior, double covers, foil color error). Unique curiosity pieces.
Advance promotional black-and-white booklets, ashcans created to secure trademark rights, and preview giveaways.
Each cover variant, retailer incentive, and subsequent printing represents an independent atomic tradeable instrument with unique supply elasticity, barcode registration, and secondary market demand.
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Millnenium Giants are stomping all over the world. In England, the Challengers try to divert a giant who's walking a collision course with London. Clay leaps a motorcycle into the giant's foot. Kenn identifies lines of mystical energy with help from John Constantine. Marlon flies overhead, and Brenda coordinates. With Army help, the Challengers siphon huge amounts of electricity through power lines, and the giant turns. Visiting New Mexico, the Challengers consult Tim Blue Star, a Hopi shaman, who says the Earth is cleansed in cycles. Marlon suggests they need someone bigger -- Superman.
Inspect underlying sources, timestamps, and confidence factors for any market claim
All prices are current market price based on historic completed sales with a buyer and seller agreeing on price. Calculated via proprietary algorithm tracking end-of-month historical sales. Unsold items are excluded.
Stored PriceCharting 9.8 price for product 2424619. 1 dated nightly snapshot on file for this book.
Multi-Man survives an explosion which gives him super-strength. He escapes prison and meets with Gurk, who wants Multi-Man to help him collect parts of a statue. After Multi-Man steals a part of the statue, the Challs follow him to Central America where Gurk and Multi-Man have gone for the last piece of the statue. The Challs revert Pramble to his normal form, as Gurk uses the statue to unlock a lost tribal treasure. Escaping, Pramble is speared by natives and emerges as a super-genius in a frail body with a giant head. But the natives help capture Gurk and Multi-Man and reclaim the treasure.
Superman advises two boys to welcome war refugees like Sandor. Commemorates the United Nations World Refugee Year.
Two deep-sea scientists in a bathysphere are attacked by a giant octopus.
Alone in Challenger Mountain, June experiments on space spores brought to Earth by a balloon. They explode and she blacks out. The Challs return to find June is giant-sized and hostile, trying to crush them, but she passes out. Another menace is a huge red dragon-beast menacing a local town. June revives, sensible again, and grapples the monster. The beast avoided crossing a stream, so the Challs commandeer a fire truck and hose it. The beast shrinks to nothingness. It was actually a microbe monster!
Recorded price evidence by source and grade tier. Ungraded / RAW pricing represents loose physical copies; certified grading authorities record authenticated slabbed grades only. Unpriced grades remain unpriced.
| Authority Source / Metric | RAWUNGRADED | 1.8 | 3.0 | 4.0 | 5.0 | 6.0 | 7.0 | 8.0 | 9.0 | 9.2 | 9.6 | 9.8ANCHOR | 10.0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Panel Profits(Exchange FMV) | $8.46 | — | $6.00 | $6.95 | — | $15.02 | — | $21.06 | — | $29.09 | $52.00 | $76.41 | $99.00 |
Panel Profits(Bid (Buy Price)) | $1.90 | — | — | $1.50 | — | $4.30 | — | — | — | — | — | — | — |
Panel Profits(Ask (Sell Price)) | $9.29 | — | — | $7.69 | — | $16.99 | — | — | — | — | — | — | — |
Panel Profits(Annual Volume) | — | — | — | — | — | — | — | — | — | — | — | 7 tracked sales | — |
Panel Profits(Realized Listings) | — | — | — | — | — | — | — | — | — | — | — | 7 sold | — |
Highest verified price observed. Non-9.8 books never receive a 9.8 price or synthetic valuation.
ComicBase catalog guide reference valuation. Evaluated independently from newsstand cover prices and certified slabs.
Historical cover price stamped on physical newsstand or direct copies at initial publication.
Panel Profits decodes auction transaction feeds into sovereign econometric market valuations and bid-ask spreads. CGC, CBCS, and PSA never carry RAW prices.