A handmade fountain pen by Eiichi Uehara of Ohashido. A pen point: 14-karat gold. Mechanism: Cartridge, converter dual use type.
Length about 5.3in-5.5in. Shaft diameter about 0.51in to 0.59in. I haven't used it since it was disassembled and cleaned once, so I don't think there is any concern about ink clogging. You can use the included ink suction cartridge or a commercially available sailor fountain pen cartridge.
The box, ink cartridge converter, instruction manual, etc. Shown in the photo will be a complete set. Ink should be prepared by the purchaser.