Special offer on rare, discontinued ink cartridges! These are ink cartridges specifically for Waterman's vintage CF and DG series fountain pens, which were discontinued a long time ago. They are considered "hard to find" even overseas. Please note that they are NOT compatible with current Waterman fountain pens. 【Important】 Some overseas websites claim that current Waterman Mini Cartridges can be used in CF and DG fountain pens, but this is incorrect. Forcing a Mini Cartridge into the pen can damage the pen body and may cause frequent ink leaks. To ensure your valuable fountain pen lasts a long time, we recommend using the genuine, dedicated cartridges. 【About the Product】 * This sale is for one cartridge. * The ink has dried up, and there is almost no ink remaining. * Due to the change in cartridge shape, vintage CF-compatible fountain pens have become more affordable. Please consider this opportunity. These cartridges can be used in Waterman CF series Moire and DG fountain pens. You can purchase these fountain pens on Yahoo Auctions, eBay, penboard, etc. We have also added photos of beautiful Waterman fountain pens for your viewing pleasure. Please note that the dazzling Patricia uses current Mini Cartridges. CF cartridges cannot be loaded. We add this for clarification to avoid any misunderstanding. If you have any questions, please feel free to ask. We will answer to the best of our ability. * The cartridges are made in France. * Photos of the cartridges after cleaning have been added. Please take a look. If you need a larger quantity, please contact us in the comments section. We will create a dedicated listing for you.