This is an authentic PATEK PHILIPPE 18K Yellow Gold 39mm Annual Calendar Complications Self Winding Watch, 5146J-001. This timepiece is crafted in an 18K yellow gold case on single deployant crocodile strap that features a champagne dial with yellow gold numbers at 12, 3 and 9 o'clock and date aperture at 6. The dial is detailed with a power reserve indicator, moon phase window and two sub dials that represent the appropriate day and month. This is a superb watch with the classic elegance of Patek Philippe. Follow this item for alerts. Patek Philippe is a registered trademark of Patek Philippe. FASHIONPHILE is not affiliated with Patek Philippe.