Waterman C/F. The first mass market cartridge pen, complete with an original cartridge. An eBay bargain. The pen still works (I fill the cartridge with a syringe) but the nib is too smooth and wide for my tastes. I like to have a little feedback when I’m writing.
The OHTO Graphic Liner, beloved of pen addicts everywhere and beloved by me. It’s a pen that draws you back. I find excuses to use it. It lives in my pocket.