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Independent · Challengers of the Unknown · #68 · Silver Age · ID-2424590
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 #68 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.
Dennis O'Neil
Jack Sparling
Vince Colletta
typeset
Murray Boltinoff
| Grade | Panel Profits |
|---|
| 10.0 | $1,049.00 |
| 9.8 | $806.81 |
| 9.4 | $109.99 |
| 9.2 | $140.63 |
| 8.0 | $81.00 |
| 6.0 | $37.34 |
| 4.0 | $15.81 |
| 3.0 | $13.00 |
| 2.0 | $10.00 |
| Raw | $9.99 |
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 | $16.40 | $40.99 | 60.0% | Khamsin Custodial |
| 4.0 | $4.30 | $16.99 | 74.7% | Khamsin Custodial |
| Raw | $2.80 | $10.99 | 74.5% | Arnveld Capital |
Multi-tier analytical consensus distinguishing public truth, firm posture, desk urgency, and personal exposure
Value-focused accumulation target poised for catalyst breakouts.
Publisher profile coming soon
Marvel revolution. Stan Lee, Jack Kirby, and Steve Ditko create the modern superhero. Spider-Man, Fantastic Four, X-Men debut.
The sweet spot for collectors — significant enough to be culturally important, scarce enough to be valuable. 9.8 copies are extremely rare.
In illiquid alternative asset markets, sovereign blue-chip holdings trade at an exponential multiple over mid-grade float due to institutional accumulation and inelastic seller reservation prices.
The Challengers are called to investigate the killing of scientists at a secret government lab. There, they're attacked by a computer-wraith made of bundled wires charged with electricity. Prof is possessed by the monster's evil spirit and colludes to kill his friends, resisting all the while. The Challs wrap themselves with copper wire to ground the electrical charge and throw dynamite at the monster. Prof guesses Dr. Fillmore drove the computers mad just as Fillmore attacks. The dynamite goes off leaving no sign of Fillmore or the monster. But Prof knows the evil spirit still possesses him.
Valuation parity across physical collectible manifestations for Challengers of the Unknown #68.
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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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 2424590. 1 dated nightly snapshot on file for this book.
The Challengers are called to investigate the killing of scientists at a secret government lab. There, they're attacked by a computer-wraith made of bundled wires charged with electricity. Prof is possessed by the monster's evil spirit and colludes to kill his friends, resisting all the while. The Challs wrap themselves with copper wire to ground the electrical charge and throw dynamite at the monster. Prof guesses Dr. Fillmore drove the computers mad just as Fillmore attacks. The dynamite goes off leaving no sign of Fillmore or the monster. But Prof knows the evil spirit still possesses him.
House ad for GI Combat featuring The Haunted Tank, Sgt. Rock, and Star-Spangled War Stories featuring Enemy Ace.
A fan thinks Jack Sparling is too busy with too many titles, and the editor notes "Invincible Vince" Colletta will now ink. Fans suggest first names for the Challengers: "What do you think of Scott Morgan, William Davis, Allen Ryan, and Robert Haley?" Girls love Tino and want him as a regular Challenger.
History of The Spectre.
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) | $9.99 | — | $13.00 | $15.81 | — | $37.34 | — | $81.00 | — | $140.63 | $654.00 | $806.81 | $1,049.00 |
Panel Profits(Bid (Buy Price)) | $2.80 | — | — | $4.30 | — | $16.40 | — | — | — | — | — | — | — |
Panel Profits(Ask (Sell Price)) | $10.99 | — | — | $16.99 | — | $40.99 | — | — | — | — | — | — | — |
Panel Profits(Annual Volume) | — | — | — | — | — | — | — | — | — | — | — | 15 tracked sales | — |
Panel Profits(Realized Listings) | — | — | — | — | — | — | — | — | — | — | — | 15 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.