This is a Patek Philippe Nautilus watch, specifically the reference 5711/1300A (or a custom diamond-set version of the 5711), featuring:
• Brand: Patek Philippe
• Model: Nautilus (Ref. 5711 series)
• Key Features:
◦ Green vertically-striped dial
◦ Baguette diamond-set bezel
◦ Stainless steel bracelet and case
◦ 3 o'clock date window
