The SIHH 2016 Patrimony Perpetual Calendar is a stunning watch from the Collection Excellence Platine, known for its luxurious designs since 2006. It's made entirely of 950 platinum, including the dial which has a finely grained sandblasted texture and a discreet "Pt50" inscription between 4 and 5 o'clock. The outer edge of the dial is slightly curved and features a "pearl" minute-track and 18K white gold hour markers. The hands are also made of 18K white gold, while the calendar pointers are a striking blue steel. To complete the look, the dark blue alligator strap is hand-stitched with silk and platinum threads and fastened with a folding cl