The Pelikan Souvern fountain pen, notable for its innovative differentiated piston mechanism introduced in 1929, continues to evolve with its core design intact. The iconic Blue striped sleeves, added in 1995, involve an intricate manufacturing process using a specially developed cotton material. The M800 model, in particular, features a 24-carat gold-plated piston filler, an elaborately striped celluloid acetate body, and an 18-carat/750 gold nib with rhodium decor, each hand-tested for quality. This high-end writing instrument exemplifies Pelikan’s precision and commitment to craftsmanship.