Kaweco Piston Al Sport NAVY fountain pen (with bottled ink)Kaweco writes history Kawecos history dates back to the year 1883. Since then, there have been many different filling systems for fountain pens. While ink cartridges are particularly popular nowadays, the piston mechanism allows the ink to be drawn directly from the bottle into the fountain pens integrated ink chamber. Our Sport Piston Filler thus makes ink cartridges obsolete. Something old, something blue, something new Our Piston Sport AL series