The Nautilus Ref. 5711/1P 40^th Anniversary will be available in a limited edition of 700 watches. With its platinum case, it perpetuates a grand tradition that began with a stainless steel debut model in 1976. It is reminiscent of the original Nautilus Ref. 3700/1A, but also suggests the subtle evolution of the model line during the past 40 years.

With a width of 44 mm (including the crown), the new Ref. 5711 is a rather large watch. But 40 years ago, this also applied to the Ref. 3700/1A, which – although 2 mm narrower – was so large in its time that it was nicknamed "Jumbo". This was perhaps a tongue- in-cheek allusion to the Boeing 747 Jumbo Jet that stood for the public’s growing desire to travel and from 1969 on remained the world’s largest passenger jet for nearly 4 decades.

Additionally, 2 millimeters, as little as it may seem, makes a big difference on the wrist. Patek Philippe’s watch creation department realized that proportions have changed in the past decades. The new format befits the Ref. 5711/1P Anniversary Nautilus very well.

The case is crafted from solid platinum 950 to celebrate the 40^th anniversary. With its inimitably cool silvery hue, it not only ranks among the most precious of noble metals but is also very challenging to machine.

Its tough, ductile consistency abrades drill bits, milling heads, files, and polishing tools much more severely than gold or steel, distinctly intensifying the effort invested in working the three-part case and the link bracelet of the Nautilus with many forms of finissage, such as chamfering, satin-finishing, sandblasting, and mirror polishing.

The result is a look that projects a multitude of aspects from a gentle shimmer to a bright gleam, in ways unmatched by other timepieces. As all other Patek Philippe platinum watches, the new Nautilus Ref. 5711/1P is fitted with a flawless rare white Top Wesselton diamond (approx. 0.02 ct.) in the bezel above the lugs at 6 o’clock.

The dial of the Ref. 5711/1P is a special anniversary version as well. It is made of 18K gold and unlike the original Nautilus features a dark blue hue with a bright/dark gradation from the inside to the outside that perfectly complements the cool shimmer of platinum and assures a superb contrast of the hour markers: 12 applied batons in 18K white gold with flawless Top Wesselton baguette diamonds with a total weight of approx. 0.34 ct.).

The blue sunburst background features the typical horizontal Nautilus embossing and, in the bottom half of the dial, the very discreet two-line anniversary citation "40" and "1976–2016". The date aperture, also slightly larger in proportion to the bigger case, is located at 3 o’clock and set in a polished 18K white-gold frame.

Against this backdrop, the luminous baton-style hour and minute hands in white gold and a svelte, counterbalanced seconds hand keep track of the time with superior accuracy. The daily rate deviation is merely -3 to +2 seconds, clearly exceeding the benchmark officially imposed on a chronometer.

This high rate accuracy is delivered by the self-winding caliber 324 S C movement, which enjoys icon status among connoisseurs and enthusiasts of watchmaking artistry. Like hardly any other self-winding movement, it unites tradition and innovation with precision, dependability, and artisanal ingenuity. The heavy central rotor in 21K gold automatically delivers the power needed for fast and reliable winding. The Gyromax® balance with the Spiromax® balance spring – both are Patek Philippe inventions – guarantee high rate accuracy.

The finishes of the components are executed almost entirely by hand, including Geneva striping for the bridges, chamfering and polishing for the edges, polishing for the sinks, circular graining for the gold rotor, perlage for the plate, and gold-filled engravings. Visible through the sapphire-crystal case back, they celebrate the beauty of Genevan watchmaking traditions as upheld by Patek Philippe. The best point of departure for casual elegance.

The Nautilus Ref. 5711/1P 40^th Anniversary in platinum 950 is being crafted in a limited edition of 700 individually numbered watches. Each one comes in an anniversary box that also contains the Certificate of Origin and an anniversary document. Made of brown natural cork, the box is an authentic replica of the stylish 1976 original. Like the original Nautilus, it evokes vivid associations with the proud ocean liners that inspired the porthole design of the casually elegant timepiece.

The 40^th Anniversary cork box features polished stainless steel frames for the base and the hinged cover. The steel plaque on the front side, also a faithful replica of the 1976 original, displays the collection name “Nautilus” in cursive script and the PATEK PHILIPPE GENEVA signature logo.

Movement	:	Caliber 324 S C Self-winding mechanical movement, date, sweep seconds
Overall diameter	:	27 mm
Height	:	3.3 mm
Number of parts	:	213
Number of jewels	:	29
Power reserve	:	35 to 45 hours
Winding rotor	:	Central rotor in 21K gold, unidirectional winding
Balance	:	Gyromax®
Frequency	:	28,800 semi-oscillations per hour (4 Hz)
Balance spring	:	Spiromax®
Balance spring stud	:	Adjustable
Hallmarks	:	Patek Philippe Seal
Crown	:	3 crown positions Crown pushed home: To wind the watch Crown pulled to pos. 1: To correct the date Crown pulled to pos. 2: To set the time
Displays	:	With hands from the center: Hours Minutes Seconds
In apertures	:	Date
Case	:	Platinum 950 Sapphire-crystal glass Sapphire-crystal back Screw-down crown
Water resistant	:	120 m (12 bar)
Bezel	:	Flawless Top Wesselton diamond (approx. 0.02 ct.) at 6 o’clock
Dimensions	:	Diameter (10 to 4 o'clock): 40.00 mm Width (9 to 3 o'clock incl. crown): 44.05 mm Length (lug to lug): 44.00 mm Height: 8.3 mm
Dial	:	Base material 18K yellow gold Sunburst beneath blue PVD coating, horizontal Nautilus embossing Anniversary embossing "40 1976–2016" 12 applied baton hour markers: 18K white gold with baguette diamonds (total weight approx. 0.34 ct.) Baton-style hands for hours and minutes in 18K white gold with Superluminova coating Seconds hand rhodiumed bronze, counterbalanced
Bracelet	:	Link bracelet platinum 950
Clasp	:	Foldover clasp platinum 950