Star Wars: Episode VI - Return of the Jedi was briefly called "Revenge of the Jedi." Apparently screenwriter Lawrence Kasdan had told Lucas that "Return of the Jedi" was a "weak title." In December 1982 though, Lucas went back to his original title but not before promotional posters had already been released, such as the one above that is currently up for auction at Sotheby's with an expected hammer price of 1,400 - 2,600 GBP ($1800 - $3200 USD).
From Wikipedia:
In December 1982, Lucas decided that "Revenge" was not appropriate as Jedi should not seek revenge and returned to his original title. By that time thousands of "Revenge" teaser posters (with artwork by Drew Struzan) had been printed and distributed. Lucasfilm stopped the shipping of the posters and sold the remaining stock of 6,800 posters to Star Wars fan club members for $9.50.
(via Uncrate)
