Elegant Cartier Brushed Steel & 18ct Gold Plated Santos Stylo Bille Must II Pen comes with Hard Case and Booklet Cartier pens are designed by Cartier, & are manufactured by Montblanc. This collaboration allows Cartier to produce high-quality, luxury pens while leveraging Montblanc's manufacturing expertise. Essentially, you get the design and branding of Cartier combined with the craftsmanship of Montblanc. CARTIER REF 2025 A1