Pelikan Souverän M400 Black Blue - Fountain PenThough a more recent addition to the color palate of Pelikan M400 Souvern series pens than the green stripe, this pen has a following of people who prefer this cool color. It has all the advantages including a visible ink supply (as seen between the stripes), interchangeable nibs and a solid reputation for reliability. Part of Pelikan's signature Souvern series, the M400 Blue Stripe with gold trim fountain pen provides a vibrant color combination.