Dating is an estimate from www.ausreprints.com. An advertising strip along the bottom of most pages promotes the Superman radio show. On page 1 of the first story: "7EX presents SUPERMAN at 6.15 p.m. every MON., TUES., WED., THURS." Referenced radio stations are 7EX, 7HO, 3AW and 7HW.
This reprint fixes a mistake in the original where Clark Kent is addressed as Superman on page 6 panel 5. Clark Kent has been redrawn as Superman for this printing.