His Dark Materials, Trepanning print, signed by Philip PullmanElectric Works is pleased to present this print featuring a chapter illustration by Philip Pullman. This illustration was hand drawn by Pullman for the Lantern Slides Edition of His Dark Materials and corresponds to "Chapter Four: Trepanning" from The Subtle Knife. These prints are hand signed by Philip Pullman and are offered in a limited edition of 100. These are letterpress prints, one of the oldest printing techniques, dating back over 1,000