| Challengers of the Unknown #1 xGrade: VG++ Page Quality: OWW5th Challengers App. 1st June Robbins (Called Walker) App. Sci Fi Cover & Stories 5/58 J.Kirby Cover & Art | $600.00
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| Challengers of the Unknown #7 xGrade: VF/VF- Page Quality: OW Census: 1 in 9.2 - 4 in 9.0 - 6 in 8.5 - 2 in 8.0Aliens Story 5/59 J.Kirby Cover & Art W.Wood Inks | $300.00
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| Challengers of the Unknown #10 xGrade: VF Page Quality: OW/COW Pedigree: Big Apple Copy Census: 1 in 9.2 - 3 in 8.5 - 1 in 8.0Mt. Rushmore Type Cover, Giant Robot Hand Cover 11/59 B.Brown Cover & Art | $185.00
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| Challengers of the Unknown #10 xGrade: FN+ Page Quality: OWMt. Rushmore Type Cover, Giant Robot Hand Cover 11/59 B.Brown Cover & Art | $100.00
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| Challengers of the Unknown #12 xGrade: VG/F to FN- Page Quality: OW/COWJune Robbins & 1st Challenger Mountain App. Sci Fi Cover 3/60 B.Brown Cover & Art | $45.00
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| Challengers of the Unknown #12 xGrade: 9.2 Page Quality: COW Pedigree: Big Apple Copy Census: 1st (Single Highest Graded Copy)1st Challenger Mountain App. Sci Fi Cover 3/60 B.Brown Cover & Art | $400.00
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| Challengers of the Unknown #14 xGrade: FN++ Page Quality: OWOrigin & 1st Multi-Man App. Sci Fi Cover 7/60 B.Brown Cover & Art | $75.00 $65.00
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| Challengers of the Unknown #23 xGrade: VF++ Page Quality: OW/COWSci Fi Cover & Story, First 12c Issue 1/62 B.Brown Cover & Art | $100.00
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| Challengers of the Unknown #23 xGrade: 9.6 Page Quality: OW Census: 1 in 9.6 - 1 in 9.4Sci Fi Cover & Story, First 12c Issue 1/62 B.Brown Cover & Art | $450.00
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| Challengers of the Unknown #29 xGrade: VF- Page Quality: LTOW Pedigree: Big Apple CopyLavanites App. Underwater Adventure 1/62 B.Brown Cover & Art | $65.00
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| Challengers of the Unknown #31 xGrade: NM- Page Quality: OW Pedigree: Hollywood Copy Census: 2 in 9.4 - 3 in 9.2Aztec Story, Bondage Cover, Origin REtold 5/63 B.Brown Cover & Art | $165.00
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| Challengers of the Unknown #33 xGrade: VF/NM to NM- Page Quality: OW/COW2 Sci Fi Stories 9/63 B.Brown Cover & Art | $95.00
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| Challengers of the Unknown #36 xGrade: 9.4 Page Quality: OW Pedigree: Hollywood Copy Census: Highest Graded - 4 in 9.43/64 B.Brown Cover & Art | $195.00
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| Challengers of the Unknown #40 xGrade: VF/NM Page Quality: OW/COW Pedigree: Hollywood Copy Census: 2 in 9.6 - 2 in 9.4 - 4 in 9.0Multi-Man App. Bondage Cover 11/64 B.Brown Cover & Art | $105.00
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| Challengers of the Unknown #47 xGrade: F/VF to VF- Page Quality: OWW Pedigree: Boland Brothers CopySponge Man App. 1/66 B.Brown Cover & Art | $38.00
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| Challengers of the Unknown #48 xGrade: FN- Page Quality: OW/COW Pedigree: Boland Brothers CopyDoom Patrol (The Chief, Elasti-Girl, Negative Man, Robotman) Cross-Over, League of Challenger-Haters (Kra, Volcano Man, Drabny, Multi-Man) App. 3/66 B.Brown Cover & Art | $18.00
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| Challengers of the Unknown #49 xGrade: NM/NM- Page Quality: OWW Census: 1 in 9.8 - 1 in 9.6 - 4 in 9.41st Challengers Corp. 5/66 B.Brown Cover & Art | $125.00
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| Challengers of the Unknown #49 xGrade: VF Page Quality: OW Pedigree: Boland Brothers Copy1st Challengers Corp. 5/66 B.Brown Cover & Art | $45.00
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| Challengers of the Unknown #50 xGrade: VF- Page Quality: OW Pedigree: Boland Brothers CopyVillo & Brainex App. 7/66 B.Brown Cover & Art | $28.00
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| Challengers of the Unknown #51 xGrade: VF Page Quality: OWW Pedigree: Boland Brothers CopySea Devils Crossover 9/65 B.Brown Cover & Art | $33.00
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| Challengers of the Unknown #51 xGrade: VF+ Page Quality: OWW Pedigree: Marin County CopySea Devils Crossover 9/65 B.Brown Cover & Art | $45.00
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| Challengers of the Unknown #52 xGrade: FN- Page Quality: OW Pedigree: Boland Brothers CopyVillo & Brainex App. 11/66 B.Brown Cover & Art | $14.00
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| Challengers of the Unknown #52 xGrade: VF/NM Page Quality: OWWVillo & Brainex App. 11/66 B.Brown Cover & Art | $53.00
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| Challengers of the Unknown #52 xGrade: 9.4 Page Quality: OWW Census: 1 in 9.8 - 4 in 9.6 - 3 in 9.4Villo & Brainex App. 11/66 B.Brown Cover & Art | $140.00
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| Challengers of the Unknown #53 xGrade: FN- Page Quality: OWW Pedigree: Boland Brothers CopyDimension Man & Iron Dictator (Neo-Nazi) App. 1/67 B.Brown Cover & Art | $14.00
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