Excellent extremely rare black ring 

ROTRING TINTENKULI with rare Masterpiece like cap rings

from the 1950

INK PEN / TECHNICAL DRAFTING STYLOGRAPH PEN  

The outer diameter of the the tip is:  0.75 mm

The Pen is fully cleaned and the clip has some patina. 

On the mechanism it has a rare black ring with TIKU on it.

It is in a very good condition, maybe never filled.

No cracks or deep scratches.

Very good working condition!

High quality, made in Germany.

Please look for my other pens in auction and ask questions in german, english or french.

Your pen will be shipped as an registered air-mail letter from Berlin, Germany to worldwide.