The Ballpoint Pen Refill is linked to the launch of Le Petit Prince, a story of mentoring. The second launch of the trilogy focuses on the deep relationship between the Little Prince and the Aviator. The brown color of the Ballpoint Pen Refill is inspired by the leather cap of the Aviator, who encounters the Little Prince in the Sahara desert. For all Montblanc Ballpoint Pens except Meisterstück Homage to W.A. Mozart.