The most valuable "Star Wars" action figure is the Telescoping Lightsaber Darth Vader, which was released in 1978. Other valuable "Star Wars" figures include the 1978 Vinyl Cape Jawa, the 1980 Rocket Firing Boba Fett and the 1985 Yak Face.
The Telescoping Lightsaber Darth Vader action figure is worth about $6,000 as of 2014, according to About.com. When the first "Star Wars" toys were manufactured, Darth Vader came with a telescoping lightsaber that rose out from the arm of the action figure. Because these lightsabers broke easily, they were soon replaced by a single-piece lightsaber, making the figures with the telescoping lightsaber rare and valuable.
The Vinyl Cape Jawa is worth about $2,000 as of 2014, according to About.com. The first iteration of the Jawa action figures were equipped with a vinyl cape, but Kenner replaced later versions with a cloth robe.
The Rocket Firing Boba Fett came with a missile that the action figure was able to fire from its back. Due to safety concerns, subsequent iterations of the Boba Fett toy did not include a missile. About.com indicates that the original toy has sold for between $1,000 and $2,000.
Kenner Products discontinued the "Star Wars" line in 1985, but the company had already manufactured Yak Face action figures, which were distributed only in Europe and Canada. According to About.com, Yak Face's value is around $1,000 as of 2014.