The nibs of models 12, 22 and 32 are largely identical in form and largely compatible; they differ, however, in material: the 12 has 18-carat, the 22 14-carat gold nibs, the 32 generally gilded steel nibs. A repair of a damaged nib seldom pays off financially — cheaper is the purchase of another 32 as a parts donor. Fitting a gold nib from a 12 or 22 into a 32 is also possible. The first port of call for used nibs is Maxpens (Horst Schrage).