Compatibility: Exclusively designed for the Otto Hutt Design 07 series. Exquisite Finish: Heavily platinum-plated for a brilliant, mirror-like shine and maximum resistance to wear and oxidation. Large Format: The section is specifically weighted and sized to provide the characteristic balance that Design 07 owners expect from a flagship pen. Nib Design: Features the large, iconic bicolor nib, exquisitely engraved to reflect the brand\’s heritage in Pforzheim, Germany. 18ct (750) Solid Gold: The ultimate writing experience. This large 18ct gold nib offers exceptional elasticity, smoothness, and a luxurious ink flow that adapts to your unique handwriting style. Origin: Hand-finished and 100% Made in Germany.