selling off 78 of his one-of-a-kind “Star Wars” props on July 29 at Heritage Auctions, but buyers were able to start bidding online for the pieces on July 5. There are 31 items from the space film franchise including Carrie Fisher’s Snowspeeder and a cache of prop weapons, including what the auction house dubbed the “Holy Trinity” — a trio of lightsabers from “The Phantom Menace,” used in the infamous bridge fight scene with Qui-Gon Jinn, Obi-Wan Kenobi and Darth Maul.“Every one of these is something that I always dreamed of holding in my hand,” Robert Wilonsky, vice president of Heritage’s public relations and communications, told The Post.“We all loved these movies when we were kids.