Tintenkuli Transparent Demonstrator

Description

This is a vintage rotring Tintenkuli stylograph from the 1950s.
It is a rare transparent celluloid body, with ebonite cap and endcap.
The pen is a piston filling pen. The piston is smooth and works without issue. Great for use with bottled fountain pen ink.
The nib writes excellently and smoothly, in great working condition.
The pen has been tested and fully cleaned.