Montblanc Writing Instrument Meisterstuck Solitaire Doue Blue Hour Classique Rollerball Pen 112894. Montblanc Meiterstuck Blue Hour collection is inspired by the magical hour between daylight and night - the Blue Hour - when the city lights sparkle across the skyline as the sun sets. The luxury ballpoint features a barrel with engraved hexagon pattern covered by translucent deep blue lacquer. The polished platinum coated cap is crowned by the iconic white Montblanc emblem and three rings embossed with the Montblanc brand name. Dimensions: 136.3 x 12.5 mm.