Not to correct too much here, BUT the one on screen is NOT a Belstaff. Belstaff only makes a REPLICA of this jacket, just like all the other companies listed out here.
I will say that Belstaff was able to go over the original screen used jacket as an officially licensed seller of the replica jackets after the movie was released, but even there's has some slight variances from the original screen seen jacket that was designed and made by the in-house wardrobe department during film production.