Retro 1951 fountain pens can be refilled with standard international-sized ink cartridges or with the ink converter originally provided with the pen and any brand of bottled ink.
Colorado Pen offers international-sized ink cartridges in over 30 different colors. This specially formulated ink helps keep your Retro 1951 fountain pen writing smoothly.
If you still have your original ink converter, Colorado Pen has a large selection of bottled ink from which to choose. Our brand arrives in a huge 90ml bottle or smaller 30ml bottle. Private Reserve offers unique colors in cartridges and different ink types in bottles.