Note that the following dates are sourced from the RS website and may not be strictly accurate:
Bat I -
Dec. 15, 1977 (no star count recorded)
Dead Ringer -
Nov. 26, 1981 (2 stars)
Bat II -
Oct. 28, 1993 (2 stars)
Bat III -
Oct. 17, 2006 (2 stars)
Again, not sure if the dates are exact, but look for issues on or around them.