Nakaya Portable Writer Heki-tamenuriDressed in brownish green tamenuri and a smooth, continuous shape, the Portable Writer in Heki tamenuri is one of the classic Nakaya pen designs. The curving expanse of the Portable size showcases the layered Heki tamenuri finish, which is further accented by the gold plated clip. This Nakaya fountain pen is made of naturally harvested ebonite hard rubber which has been hand turned and then is meticulously coated with urushi, a material made from the