Checking through my dictionary, Tsuge (ツゲ） is called "box tree or box wood" in English.
Kushi (japanese comb) of Tsuge is loved for such a long time.
I really love one too.
I made its cover (protector).
(Price : 15.88 in USD. I would like to have measurement of your comb for custom made order.)
Satisfied with my work :-)