The cap and the other parts of the casing give the model its characteristic white radiance.
The Souverän M405 Silver-White fountain pen with differential piston mechanism has a 14-carat/585 completely rhodium-plated gold nib. The matching ballpoint pen is available with push-button mechanism.
Every Souverän fine writing instrument was crafted with the highest precision, mounted by hand and finally carefully checked. Furthermore, the writing qualities of every gold-nib were tested by hand before it comes to you.
Quality, made in Germany.