It is ink stopper type. The main body is lacquer, ebonite and lacquer finish.
The man who knows who this work is made at this pen is a mania. Unfortunately the name is entering. There are no accessories such as boxes, syringes, instructions. I handed it over in antique city. The item "486 / handmade fountain pen ink stop type Antique JAPAN USED Rare Item masa" is in sale since Wednesday, July 11, 2018.
This item is in the category "Collectibles\Pens & Writing Instruments\Pens\Fountain Pens\Other Fountain Pens". The seller is "tune6492matu" and is located in sakai. This item can be shipped worldwide.