This limited edition was produced in 2005 in 1000 copies on the occasion of the release of episode 3: Star Wars, the Revenge of the Sith.  The box celebrates the advent of Anakin Skywalker in Darth Vader. Luke and Leia's father switches to the dark side of the force at the end of episode 3 under the influence of Darth Sidious, the new emperor and ex-senator Palpatine.  I bought it in 2019, after seeing the ninth and perhaps last episode of the saga: Star Wars, episode IX - The Rise of Skywalker.