| 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 #2 xGrade: FN Page Quality: OW6th Challengers Issue, June Robbins (Called June Walker & Atomic Beast App. (Rocky Davis, Prof Haley, Ace Morgan, Red Ryan) Sci Fi Cover 7/59 J.Kirby Cover & Art | $300.00
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| Challengers of the Unknown #2 xGrade: 9.2 Page Quality: OW Census: Single Highest Graded - Next Grade 8.06th Challengers Issue, June Robbins (Called June Walker & Atomic Beast App. (Rocky Davis, Prof Haley, Ace Morgan, Red Ryan) Sci Fi Cover 7/59 J.Kirby Cover & Art | $3,950.00
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| Challengers of the Unknown #2 xGrade: FN/FN+ Page Quality: OW6th Challengers Issue, June Robbins (Called June Walker & Atomic Beast App. (Rocky Davis, Prof Haley, Ace Morgan, Red Ryan) Sci Fi Cover 7/59 J.Kirby Cover & Art | $350.00
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| Challengers of the Unknown #3 xGrade: VG Page Quality: OW/COWRocky Displays Fantastic Four Like Powers From a Space Flight (Pre-FF #1) June Walker (June Robbins) App. 9/58 J.Kirby Cover & Art | $300.00
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| Challengers of the Unknown #6 xGrade: F/VF Page Quality: OWFull Page Flash #105 Ad 3/59 J.Kirby & W.Wood Cover & Art | $220.00
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| Challengers of the Unknown #7 xGrade: VF/VF- Page Quality: OWW Census: 11 Higher - 2 in 8.0June Robbins App. Aliens Story 5/59 J.Kirby Cover & Art W.Wood Inks | $300.00
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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 #9 xGrade: VG+ Page Quality: OW/COW2 Challengers Sci Fi Stories 9/58 B.Brown Cover & Art W.Wood Inks | $58.00
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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 #10 xGrade: F/VF Page Quality: OWWMt. Rushmore Type Cover, Giant Robot Hand Cover 11/59 B.Brown Cover & Art | $125.00
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| Challengers of the Unknown #11 xGrade: G/VG to VG- Page Quality: OW/COW"Creatures from the Forbidden World' Story, Gray Tone Cover 1/60 B.Brown Cover & Art | $58.00
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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 #13 xGrade: VF+ Page Quality: OW Census: 1 in 9.2 - 2 in 8.0June Robbins App. Centaur Cover 5/60 B.Brown Cover & Art | $200.00
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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 #18 xGrade: VF- Page Quality: OWWJune Robbins App. Cosmic Creatures Story 3/61 B.Brown Cover & Art | $70.00
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| Challengers of the Unknown #19 xGrade: VF- Page Quality: OWWJune Robbins App. Alien Sci Fi Story 3/61 B.Brown Cover & Art | $70.00
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| Challengers of the Unknown #20 xGrade: VG Page Quality: OW2nd Multi-Man App. Near Last 10c Issue 7/61 B.Brown Cover & Art | $28.00
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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 #25 xGrade: VF+ Page Quality: OWWJune Robbins & Cosmo App. Alien Sci Fi Cover & Story 5/62 B.Brown Cover & Art | $105.00
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| Challengers of the Unknown #26 xGrade: FN+ Page Quality: OWJune Robbins App. Alien Sci Fi Cover & Story 7/62 B.Brown Cover & Art | $40.00
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| Challengers of the Unknown #27 xGrade: NM- Page Quality: OWW Census: 1 in 9.6 - 1 in 9.4 - 3 in 9.21st Volcano Man App. 9/62 B.Brown Cover & Art | $225.00
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