Ebonite in black and red (in “ricchiku” or bamboo style).
The image of color: The sun in the morning is shining on the bamboo in red.
Ebonite is a type of resin that has a very long history. It is considered the first “synthetic resin”to become widely used from 19th century. Ebonite, made from ruber and sulfur, is very firm and strong to acid, and changeless, so that is good material for fountain pens.