The Pelikan Souverän M600 blue black fountain pen is a gorgeous fountain pen with dazzling blue stripes for an amazing smooth writing. It takes a lot of design work to achieve such a contrast in color and brilliance. The central part of the body is made of cellulose acetate, giving the pen a dazzling shine. The Pelikan M600 Black Blue fountain pen features a 14K solid gold nib with an integrated piston filling mechanism. The Pelikan M600 Black Blue pen features Pelikan's classic blue striped barrel and gold-plated trim. The Pelikan M600 Black blue fountain pen comes with the hallmark striped celluloid overlay that has been associated with Pelikan fountain pens for half a century. The cap band is engraved with "Souveran," and the material has a sparkling quality to it.