Introduced in the fall of 2021, the Nahvalur Nautilus combines vintage materials with modern designs. When fountain pens were first invented, all pens were made of a hardened rubber called ebonite. Today, hardly any pen companies are still using this beautiful material. The Nautilus series is bringing back this retro material while combining modern design elements. Three portholes are carefully crafted onto the body of the pen to allow users to view the ink reserve.  Nahvalur Nautilus Bronze Corydoras Fountain Pen Specifications: Pen Material: Ebonite Trim: Retro Brass Nib: Stainless steel #6 size or 14k Gold #6 size made by Nahvalur Filling Mechanism: Piston-filling (bottled ink only) Pen Length, Closed: 5.9 in. / 149mm Pen Length, Open (Cap Off): 5.24 in. / 133mm Pen Length, Open (Cap Posted): Cannot be posted Pen Barrel Diameter: 0.51 in. / 13mm Pen Grip Section Diameter: 0.39 in. - 0.45 in. / 10mm - 11.5mm Pen Weight: 1.3 oz. / 36.85g Packaged in a gift box