The Watermark sterling silver filigree is made from a solid tube of sterling silver. The repeat V pattern reflects Visconti’s logo in a watermark-style design has now become Visconti “Trademark”, the cutout filigree method very much highlights Visconti’s approach to its art, precision and beauty. Each tube undergoes up to 20 hours of operation to arrive at its end-result. A stunningly beautiful pen.  BLUE MOON Edition : Ruthenium-plated filigree overlay with translucent blue resin underlay. RAINBOW Edition : Iridescent finish overlay with clear resin underlay.