This Autographed Official Pix 8x10 Photo with the inscription of "Darth Vader (Prowse), Darth Vader (Nelson), Vader Sculptor (Muir)" has been Personally Signed by David Prose, C. Andrew Nelson, Brian Muir, Brian Archer, Ron Punter, Ben Burtt, & Pete Ronzani. of Star Wars. This item is 100% Authentic to include a Certificate of Authenticity (COA) / hologram by Beckett Authentication Services. The authenticity can be verified on Beckett Authentication Services website.