CusTom (Tom Westerich) Ebonite Oversized Fountain Pen
Tom Westerich’ hand made this amazing pen. He calls them “cusTom” pens. 🙂
It fills via Piston Filler. The pen has  large ebonite feed, and snake clip similar to the vintage one, but this one has been re-designed in a better way so it won’t bend as much when using it. There are 2 of them available, one with a Fine nib (now sold) and one with a Medium nib.