If you're in Tokyo please stop by
Eboya.
NIKKO EBONITE MFG. CO., LTD.
Address:
1-38-6 Arakawa, Arakawa-ku
Tokyo 116-0002, JAPAN
Phone number:
+81 3 3891 5258
Nikko makes the ebonite that ends up as Nakayas and Namikis and Danitrios and King of Pen and Izumos and also some really fine ebonite pens of their own design. They are also great folk.
Also New Years is a big celebration period so check to see what is open or closed.
Also check out the
Tokyo Pen Shop Quill.