CUSTOM 823 DEMO A unique alternative to the everyday fountain pen, the new Custom 823 by Pilot is in a league of its own. A simple, yet elegant design, the Custom 823 is great for everyday writing. The smoky transparent amber cap and barrel, visible ink supply and unique writing system make refilling effortless. The Custom 823 features a 14k gold nib. Each pen comes in a silver sateen lined Pilot gift box with bottled blue fountain pen ink.