Nautilus 5711/1A QC: the embossed blue-black dial, the porthole bezel and the 8.3 mm profile

Watches QC & Legit Check
1

The 5711 has a history thread (Nautilus 5711, from PF to 3KF) but no QC checklist. Reference points from Patek Philippe’s own material: the steel 5711/1A was launched in 2006, the -010 with the blue-black gradated dial followed, and from 2019 it ran on the self-winding calibre 26-330 S C with a stop-seconds function. The case is 40 mm and 8.3 mm tall, water resistant to 120 m, with a sapphire case back. Patek replaced the -010 with the olive green -014 in 2021.

So on photos you are checking a thin, flat watch with a very particular dial and a bezel that is all about finishing.

[[PHOTO: Nautilus 5711/1A-010 straight on in daylight, the horizontal embossing visible across the blue-black dial]]

Editorial summary, not independently verified.

2

TL;DR: dial embossing first, bezel finishing second, profile third.

The dial: horizontal embossed lines running straight and parallel from 9 to 3, without waves or a change in spacing. The gradient runs from blue in the centre to darker at the edge, so judge it in daylight. Applied baton markers sit straight, and the date window at 3 has clean edges.

3

Verdict on the bezel: it’s where most photos tell the story. The rounded octagon should have even sides, with a satin-brushed top and polished bevels. Look for the transition between brushed and polished: a crisp line, not a blurred band. The same contrast continues on the bracelet, with brushed outer links and polished centre links. The finishes guide is in satin or polished in QC photos.

4

Basic question: the case has those “ears” on the sides. Are they part of the case shape or a separate piece?

5

They’re the side hinges, the porthole-inspired flanks that give the Nautilus its outline. The 40 mm figure is the case without them; across the hinges it measures more. On photos:

  1. Both flanks symmetrical, same size and same distance from the bezel.
  2. A clean seam where the flank meets the case, no gaps.
  3. The crown and its guard on the right flank sit straight.
    How the integrated shape wears at 40 mm is covered in integrated bracelets on the wrist.

[[PHOTO: Nautilus 5711/1A from above at a slight angle, both side hinges and the satin/polished bezel transitions in view]]

6

Profile. Ask for a shot at exactly 9 o’clock. The original is thin for a sports watch, and the case, bezel and bracelet read as one flat line. A visibly tall middle case or a domed-looking crystal is the thing to flag. The same profile check is used for its sister model in Aquanaut 5167 QC.

7

Case back and seconds. The sapphire back shows the movement; on QC photos you can only judge how cleanly the back is fitted and how sharp the text is, not what’s inside. Patek lists a stop-seconds function for the 26-330 S C, so with the crown pulled to the setting position the seconds hand should stop. That’s a quick video request.

8

Summary:

  1. Dial: straight, evenly spaced horizontal embossing; blue-black gradient judged in daylight; date window clean.
  2. Bezel: even octagon, satin top with crisp polished bevels; same contrast on the bracelet.
  3. Side hinges: symmetrical, clean seams, crown guard straight.
  4. Profile: a 9 o’clock shot; the case should read thin and flat.
  5. Back and seconds: clean fit and text; a short video for the stop-seconds.
    Not checkable on photos: water resistance, timekeeping and the movement itself.

Editorial summary, not independently verified.

9

Thanks. The bevel transitions and the 9 o’clock shot are the two I’d ask for first.