The authenticity can be verified on Beckett Authentication Services website. This Autographed Card with the inscription of "Darth Vader (Prowse)" has been Personally Signed by David Prowse, Leslie Schofield & James Earl Jones of Star Wars. This item is 100% Authentic, it comes slabbed and authenticated by Beckett Authentication Services. The authenticity can be verified on Beckett Authentication Services website. The plastic encapsulation has a small chip in the bottom left.