Challengers of the Unknown 1 (VG- 3.5)SOLD
Notes: c. 1960. 68-pgs squarebound. Published by Thorpe & Porter. B&W U.S. reprints "The Sorceress of Forbidden Valley" & "Captives of the Space Circus" both from Challengers of the Unknown #6, and "Challenge of the Star Hunter" & "Mystery of the Mental Menace" both Adam Strange from Showcase #19.
Condition: VG- (3.5). A relatively 'clean' copy, but the spine is heavily warped leading to a 3cm split at the bottom and the back cover has quite a few creases with a 1cm tear to the edge.