Cartier Must de Cartier Trinity Ballpoint Pen – Silver-Plated – Boxed Elegant and timeless Cartier ballpoint pen from the iconic Must de Cartier collection. Crafted in silver-plated metal with the signature finely engraved barleycorn (guilloché) pattern and the distinctive Trinity-inspired rings. The pen features the engraved Cartier logo on the clip and the iconic Cartier “Double C” logo on the cap finial. A refined writing instrument suitable for collectors and everyday luxury use.