Eureka Dodecagon aka-tamenuri is a handmade ebonite pen with urushi lacquer, custom ebonite feed, and Argentium silver nib, all created by a one-man pen maker in South Korea.

Eboya is a Tokyo-based pen maker that has been around since 2009. Their specialty is pens made of ebonite, polished on traditional rokuro lathes. Eboya’s parent company is Nikko Ebonite, the only producer of ebonite in Japan.

Eboya has seven pen fountain pen models, including the Onoto-inspired Kyouka, the bamboo-like Ricchiku, and the torpedo-shaped Houga. Each model is available in several types of marbled ebonite, in small, medium, and large sizes, with an appropriately-sized 14K Bock nib in F, FM, M, or B.