At the higher end there is also Ariel Kullock's "Fantasy" 51's [1]. I believe that he's no longer making them, but it's not uncommon to see his pen parts for s

At the higher end there is also Ariel Kullock's "Fantasy" 51's [1]. I believe that he's no longer making them, but it's not uncommon to see his pen parts for sale (e.g. [2]). [1]: http://www.penhero.com/PenGallery/Parker/Parker51FantasyPart1.htm http://www.penhero.com/PenGallery/Parker/Parker51FantasyPart... [2]: https://www.ebay.com/str/arielkullockpens/Parker-51/_i.html?_storecat=2011743017 https://www.ebay.com/str/arielkullockpens/Parker-51/_i.html?...