This is an authentic PATEK PHILIPPE 18K White Gold Alligator 37mm Annual Calendar Moonphase Automatic Watch Black 5396G-014. The watch is crafted of 18 karat white gold and features a black dial, Arabic numeral hour markers, date indicator, moon phase complication, sapphire crystal, exhibition case back, 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.