A Darth Vader lightsaber used in the climactic duel in Cloud City where he tells Skywalker "I am your father" is among the highlights of the Ultimate Star Wars Auction to be held by Heritage Auctions in the US on November 12.
The Vader saber, also used in Return of the Jedi, is expected to fetch at least $US1 million ($A1.4 million).
It is one of more than two dozen lightsaber props that will be up for sale at the auction that spans Star Wars Episodes I through IX and other films and TV shows from the galaxy George Lucas created.
Others include duelling lightsabers forcefully wielded by Ewan McGregor's Obi-Wan Kenobi and Hayden Christensen's Anakin Skywalker in Revenge of the Sith that are expected to go for at least $US10,000 ($A14,310) apiece.
An EE-3 carbine blaster wielded by Boba Fett throughout The Empire Strikes Back is estimated to bring in more than $US100,000 ($A143,100) .
Also included are a Yoda puppet hand used by Frank Oz in the character's original appearance in The Empire Strikes Back, C-3PO actor Anthony Daniels' signed, personal third-draft screenplay for the original 1977 Star Wars and a TIE Fighter pilot helmet from Rogue One: A Star Wars Story.
