This is an authentic PATEK PHILIPPE 18K White Gold Alligator 40mm Nautilus Automatic Watch Grey 5712G-001. The watch is crafted of 18 karat white gold and features a slate grey dial with sub-dials, black alligator strap, sapphire crystal, and an automatic movement. Follow this item for alerts. Patek Philippe is a registered trademark of Patek Philippe. FASHIONPHILE is not affiliated with Patek Philippe.