Low $585
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Mid $3k
 | 
High $19k
  • 1st team appearance and origin of the Legion of Super-Heroes: Cosmic Boy, Lightning Boy, Saturn Girl
  • 1st appearance of Cosmic Boy
  • 1st appearance of Lightning Boy, later becomes Lightning Lad
  • 1st appearance of Saturn Girl
Details
Publisher DC
Published April 1958
Written By Otto Binder
Illustrated By Curt Swan