This CGC 9.8 pristine Near Mint/Mint from the Rocky Mountain Pedigree collection is the highest graded and 1 of only 3 to ever reach this top tier. Adding to its desirability, CGC has assigned its perfect page quality designation of White Pages, making this example the very best 9.8 attainable.
Notes:
Based on the job number, the page length, and Ross Andru's guest editing, this story was probably produced for the aborted Five-Star Super-Hero Spectacular dollar comic advertised in DC comics dated July 1979.