SHOWCASE #6 CGC 7.0 1ST APPEARANCE AND ORIGIN OF CHALLENGERS OF THE UNKNOW.
SHOWCASE # 6
SCARCE IN HIGH GRADE ONLY 10 COPIES EXIST
IN HIGHER GRADE WITH 9.0 THE HIGHEST.
Origin and 1st appearance of the Challengers of
the Unknown !!
Publisher DC COMICS Date Issued: JAN 1957 Condition CGC 7.0 Page Quality: Cream to Off White Pages
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