For years, many in the fountain pen world hoped for a Pilot piston-filler. The Custom 823 series has surpassed expectations. The Amber Demonstrator seen here remains one of Pilot's most popular offerings. This amber-hued piston-filler has now become a mainstay of the Pilot brand. The ease with which this pen fills is exceeded only by its generous ink capacity. The Pilot Custom 823 is available with your choice of solid gold 14K nib. These Pilot 14k nibs are well-suited to customization including Stub, Cursive Italic, or Left Oblique, as well as the modification for added flexibility.