Montblanc 138 flex nib, medium stub. For sale Montblanc 138 short ink window, very good condition, works perfectly, medium and flex stub nib, new tie clip. The zoom on the nib matches the nib of the 138. The item "Montblanc 138 flex nib, medium stub" is in sale since Friday, April 23, 2021.This item is in the category "Bijoux, montres\Stylos". The seller is "yanmouro0" and is located in Dijon. This item can be shipped worldwide.