This is an authentic IWC Stainless Steel Calfskin 46mm Big Pilot Perpetual Calendar St. Exupery Watch IW503801. This timepiece is crafted of stainless steel and features a brown dial with a day-date-month display, 8 day power reserve indicator, moon phase and perpetual calendar complications, brown calfskin strap, sapphire crystal and an automatic movement. Follow this item for alerts. IWC is a registered trademark of IWC. FASHIONPHILE is not affiliated with IWC.