Above and below are some specially shot 1977 test reference pictures taken by DON POST STUDIOS of the original STAR WARS 1976 filming masks loaned out to them by LUCASFILM (or THE STAR WARS CORPORATION, which was part of it) / FOX of Darth Vader, Chewbacca, an Imperial Stormtrooper and C-3PO that would be used as visual research information in the construction of their STAR WARS masks for general sale when the film hit the stratosphere at the box office (these images were sold by an eBay dealer a couple of years ago. The seller wanted, and probably got, his desired astronomical fee for them!).
Note how the Stuart Freeborn created Chewbacca mask has begun heavy deterioration after only a year since filming (Kay Freeborn told AFICIONADO that the suit was kept under lock and key by Lucas at that time. It would be re-used only for certain key reference (as seen in Dave Berry's ILM home movie footage), promotional photos and appearances)). At least two new Chewbacca costumes and masks would later be created for EMPIRE in 1978/79.
With thanks to Chris Baker for his help with the Stormtrooper image.
