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Superman #21
CGC Census
151
Total Graded
0
9.8 NM/MT
7
8.0 VF
Clark Kent is the only reporter invited to the testing of a cannon made of the new X-Alloy, but when it explodes, it leads Superman to the Lingle Steel Corporation, manufacturer the alloy, only to discover the plant honeycombed with spies.
Cover Date
March 1, 1943
On Sale Date
January 2, 1943
Pages
68
Cover Price
$0.10
Editor
Jack Schiff
Credits
Writer
Penciller
Letterer
Characters
Superman [Clark Kent]; Perry White; Sgt. Casey; Frank Lingle; Carlton Graul (villain, introduction)
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