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Cover: Bob Brown
Challengers of the Unknown #28
☆ Be the first to review + Add to your collection — Join freeContains 3 stories
The Revolt of the Terrible FX-1
The Riddle of the Faceless Man
Untitled Humor story
ComicBooks.com Value
Our Model is In Beta
Raw (VG) $14
CGC 9.4 · 2 in census $378*
CGC 9.2 · 1 in census $219*
CGC 9.0 · 3 in census $185
CGC 8.5 · 3 in census $102*
CGC 8.0 · 1 in census $77
CGC 7.5 · 2 in census $62
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CGC 7.0 none in existence
CGC 6.5 · 1 in census $44*
CGC 6.0 · 3 in census $39*
CGC 5.5 · 1 in census $31*
* estimate — limited direct-sales data at this grade
Our model’s value — refined as new sales data arrives · CGC census counts shown where available
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Cast · 4 characters
Full credits
Reprints
Reprinted in Showcase Presents Challengers of the Unknown #2 (2008), Titanes Planetarios #157
Key issues in Challengers of the Unknown
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