Montblanc Writing Instrument StarWalker BlackCosmos Doue Ballpoint Pen, 129290. The StarWalker collection is about walking amidst the stars. It's about exploring the cosmos and foreign galaxies, about being part of one of the most mysterious and powerful of humankind’s adventures: space exploration. The StarWalker BlackCosmos collection depicts the depth of space from the shiny black precious resin and the black PVD-coated fittings, to the needled metal cap which conveys a distinct material feeling. The patented StarWalker emblem technology features a grey translucent dome, beneath the floating Montblanc emblem.