Custom 823 is made of luxury Ebonite and coated with an elegant, black lacquer finish. Thanks to the pen’s transparency you can easily check the ink level. Equipped with a vacuum filling system and with a tank that holds a lot of ink, much more than a converter or cartridge can hold. Refill the pen with bottled ink by pulling out the piston, dip the nib in ink and then push in the piston into the pen again. This movement fills the tank with ink. 14 carat gold nib.