R2-D2, lightsaber: Force is strong in this Star Wars auction

Luke Skywalker's lightsaber, Darth Vader's helmet and shoulder armor, as well as imperial and rebel weapons are on the block, but the centerpiece is no doubt the squat blue, white and silver droid famous for communicating in a series of electronic beeps and squeaks.

The 43-inch tall R2 unit for sale is sort of a Frankenstein's monster of droids, pieced together over several years from different original components used in the first five Star Wars movies.

For the sequels after the original "Star Wars: A New Hope" in 1977, production designers took the aluminum, steel and fiberglass R2 units, retired old and worn out parts and added new features to save time and meet production deadlines.

The 10.5 -inch lightsaber comes directly from the archive of Gary Kurtz, producer of "Star Wars: A New Hope" and "The Empire Strikes Back," and is accompanied with a letter of authenticity signed by Kurtz.

Props from some of Hollywood's most famous movies are also for sale, including the illuminated disco dancing floor from "Saturday Night Fever," which is expected to get as much as $1.5 million; and the clothes worn by Leonardo DiCaprio as Jack Dawson in "Titanic."