PATEK PHILIPPE CUBITUS BLUE HORIZONTALLY RIBBED DIAL

This one’s the Nautilus rather than the Aquanaut — steel case and bracelet, blue horizontally-ribbed dial, ref. 5711/1A style.

• Case: Steel, rounded-octagon Nautilus bezel with the signature horizontal fluting on the sides
• Dial: Blue, horizontal embossed stripe pattern, applied baton hour markers with luminous fill
• Date window: At 3 o’clock
• Bracelet: Integrated steel “Nautilus” bracelet with brushed center links and polished edges
• Hands: Luminous baton hour/minute, thin sweep seconds

This is the classic 5711/1A-010 look — steel Nautilus with blue dial and matching steel bracelet — one of the most recognizable and hunted-after references in modern watch collecting (discontinued by Patek in 2021, driving strong secondary-market premiums).