I am trying to find some history on this pen stamped Bunmeisha. It is a Japanese eyedropper with sealing rod. The barrel is marked Bunmeisha / Tokyo. The barrel is black lacquer. The nib is stamped: Special's / Zion Yiu / Hardest / Iridiumpen / -3-.
I did not see Bunmeisha under the topic: Pen Manufacturers Current and Past, so does anyone know anything about this pen? Thanks in advance for the education.