Place a higher bid, Dave. This "nearly complete" spacesuit from Stanley Kubrick's seminal space opera 2001: A Space Odyssey is currently up for auction. Starting bid is $50,000 and it's expected to go as high as $300,000. From the Julien's Auctions description:
The spacesuit is an amalgamation of components worn by different actors and in many scenes throughout the film. This is highlighted by a helmet featuring four distinct layers of paint (a base of color of white, then green, then yellow, and lastly in its present color of white), indicating that it was used in different scenes by multiple actors and representing a number of characters . This nearly complete costume is of the lunar type in its present state (silver body suit, blue back pack, white helmet). This suit appears to be original in silver (never repainted). However, due to the layering of paint, the helmet appears to have been employed as a lunar type, then two of the four Discovery types (green and then yellow; the other colors/types being red and blue), then as a lunar type again. This helmet has a textured strip of tape inside with "HELMET A" written across in red.
Most notably, the base green layer of paint seen in chips, cracks, and green overspray throughout the helmet surface suggest that it may have been the very helmet worn by Keir Dullea, who portrayed Dr. Dave Bowman (the lead astronaut on the film's Discovery mission to Jupiter) in the sequence in which he reenters antechamber of the Discovery surrounded by banks of circuit breakers leading to the "brain room" and logic center to "kill" HAL in one of the most famous science fiction scenes of all time. (Video below.)