This issue has variants.
On sale date from the publication date reported to the U.S. Copyright Office found in the Public Catalog, Copyright Catalog (1978 to present) online (http://cocatalog.loc.gov/cgi-bin/Pwebrecon.cgi?DB=local&PAGE=First) retrieved 15 August 2015. Registration date: 21 May 1984. Copyright registration number: TX0001357251.
Story continued from All-Star Squadron (DC, 1981 series) #5 (January 1982); story continues in part in All-Star Squadron (DC, 1981 series) #7 (March 1982)