C-3PO Head From Return of the Jedi (1983)
“This is the only complete C-3PO head from Return of the Jedi currently in a private collection and it is offered directly from Anthony Daniels,” according to the auction site. “The costume head is made of very thin fibreglass to be as close-fitting and lightweight as possible, and it comprised of three major components: a backplate, faceplate (with installed eyes), and a neck-ring which are fixed together with two neck-bolts and the forehead antennae.” It’s estimated to fetch up to $1,000,000, though it’s probably better termed “priceless”— you can follow the auction here
