The Nautilus Reference 5811/1G-001 was introduced as a replacement for the 5711. This particular model, though, is made of 18k white gold and has a slightly larger 41mm case. It does, however, retain the classic sunburst blue dial with black gradation, the three central hands, and the date window at 3 o'clock. 

SPECIFICATIONS 

Brand: Patek Philippe
Model: Nautilus
Reference Number: 5811/1G-001
Movement: Automatic 
Condition: Unworn
Gender: Men’s
Time Period: 2022 
Box: Yes
Papers: Yes

THE CALIBER

Caliber: 26-330 S C

Jewels: 30

THE CASE

Case Material: Stainless steel
Case Diameter: 41 mm (10 to 4 o'clock)
Thickness: 8.2 mm
Waterproof: 400 ft./ 120 m./ 12 ATM
Bezel Material: Fixed stainless steel
Glass: Sapphire Crystal
Caseback: Solid
Dial: Blue sunburst, horizontal grooves
Dial Numerals: 18K with gold applied baton hour indices filled with luminescent super-luminova coating, minute/seconds dots markers on the outer rim

THE BRACELET / STRAP

Bracelet Material: Stainless steel
Buckle: Tripple folding, flip-lock piece on top of the buckle with Calatrava cross engraving 
Buckle Material: Stainless steel

THE FUNCTIONS

Hours, minutes, center sweep second hand, date in an aperture at 3 o’clock, 35 to 45-hour power reserve.

FURTHER READING 

Although Patek Philippe did not announce any new Nautilus models in Spring 2022 at Watches & Wonders, the company did drop some – another four in fact –  later that year in October. 

First, there was the introduction of the Nautilus Ref. 5811/1G-001, which was positioned as the 5711’s replacement. However, this particular model is fashioned from 18k white gold (not steel) and features a slightly larger 41mm (instead of 40mm) case. It does, however, retain that classic sunburst blue dial with black gradation, as well as the trio of hands at the center and a date window at 3 o’clock. 

Interestingly, similar to the very first “Jumbo” Nautilus from 1976, the movement of the new Nautilus 5811 has to be accessed from the dial-side. However, unlike the original, where the winding stem split from the watch so that the movement could be taken out of the case from the dial, the Nautilus 5811 includes a patent-pending pull-out piece lever system. This system permits the winding stem to be pulled out from the dial side too. Yet, the watch still has a sapphire caseback for a view of Caliber 26-330 S C. 

White Gold applied baton-shaped hour/minute hands filled with luminescent coating, stick center sweep seconds.
Octagonal case, two lateral hinges
Quickset
Three-part case, central container, bezel, screwed sapphire crystal display case back.
Stainless steel screw-down crown engraved with Patek Philippe Calatrava cross
Central rotor in 21K gold, unidirectional winding, Gyromax balance, Spyromax balance spring.
This mechanism oscillates at the frequency of 28,800 (4Hz)
Original Patek Philippe folding clasp 
Patek Philippe GENEVE signature painted in white at 12 o’clock
Patek Philippe seal (introduced in Baselworld in 2009, replaced the Geneva seal in 2009) 
Patek Philippe introduced his first Nautilus to the market in 1976 and never stopped epitomizing the elegance of this sports watch since then.

Very rare, collector’s item
Complete (box and papers)