Introducing the Patek Philippe Grand Complications In-Line Perpetual Calendar Replica

Introducing the Patek Philippe Grand Complications In-Line Perpetual Calendar Replica

The most sensational release of Patek Philippe in its first Watches & Wonders debut this year is undoubtedly the Nautilus with green dial, which marks the production line of this sports luxury reference. But the most important technically important new model that the manufacturer debuted after the release of this version comes from its ancient and classic elegant Calatrava series, the new replica Patek Philippe Grand Complications In-Line Perpetual Calendar 5236P-001.

The Case

The new replica Patek Philippe Grand Complications watch features the day, date, and month on a single line in a long, horizontal aperture beneath 12 o’clock, an arrangement that Patek Philippe replica has used in pocketwatches throughout its history — like the Ref. P-1450 replica from 1972, a piece now on display at Patek’s museum in Geneva — but never before in a wristwatch. Presented in a 41.3-mm case made of 950 platinum, with a lacquered blue gradient dial and housing a new self-winding movement, the model further solidifies Patek Philippe’s multi-generational expertise in crafting perpetual calendars for the wrist, which began with its first such model in 1925.

The platinum case is hand-polished, with the chamfered bezel and angled lugs that are characteristic of the Calatrava replica model, and features a subtle diamond recessed into the case flank at 6 o’clock. The blue dial features a gradation to black on its outer periphery and hosts applied, baton-style hour markers and hands in white gold, with double faceted edges. 

The Perpetual Calendar

Designed as a separate module with its own plate, the perpetual calendar mechanism is integrated into the movement via an intermediate wheel, which connects with the hour-wheel pinion that controls the minute hand and meshes with a 24-hour wheel to guarantee efficiency. Comprising no less than 118 components of this module are the four rotating disks of the single-line calendar display, which are kept on a one plane without overlap thanks to a patent-pending mechanism with two co-planar double ball bearings. A second patent was filed for the “anti-double-jump” system that guarantees the synchrony of the date disks and prevents them from bouncing during correction or when being impacted. The clever mechanism that immobilizes the units disk when the date transitions from the 31st to the 1st of the month represents the third of the three patent applications filed.

The Movement

Patek enthusiasts will find the view through the display back somewhat familiar. That's because the new movement is based on the existing 31-260 REG QA, originally launched in 2011 in the Ref. 5235 Annual Calendar Regulator. (Technically, the new movement is a modulear perpetual calendar, although it's so well done you kind of have to throw blanket condemnation of modular construction out the window). Even here, however, there are some visible and notable differences in design and execution (though, of course, the major engineering and watchmaking differences are hidden under the dials of both watches).

One obvious difference is the use of platinum for the microrotor in the new linear perpetual calendar replica, rather than 22k gold. Patek says part of the reason for using platinum is that it's denser than gold, which makes for slightly greater efficiency (pure platinum is about 11% more dense than pure gold). Another visible difference is that the bridges in the new 31-260 PS QL have been redesigned from the annual calendar version. The inner edges of the bridges for the automatic winding system and mainspring barrel bridge are more elaborate, and there are now separate cocks for the escape wheel and balance wheel. Overall, I think the PS QL version is more satisfying aesthetically, with a stronger connection to classic Swiss full-bridge movement design. The movement also has a system for uncoupling the rotor from the automatic winding system when the mainspring is fully wound, which helps save wear and tear on the winding train.

The entire perpetual calendar mechanism is jeweled throughout (again, in order to reduce friction and save energy, the movement runs in 55 jewels total), and the frequency goes up in the new caliber as well, from 3.2 Hz to 4 Hz (28,800 vph).

The movement holds a power reserve of 48 hours and, like all Patek Philippe in-house calibers since 2009, it meets the strict criteria for the maison’s in-house quality seal, exceeding the standards of the Swiss watch industry’s respected poinçon de Genève certification. The watch replica is delivered on a navy blue alligator strap with a platinum fold-over clasp and is priced in the U.S. at $130,108.

Technical Specifications

Model: Patek Philippe Ref. 5236P-001 In-Line Perpetual Calendar Replica

Case: 950 platinum. Sapphire-crystal caseback and interchangeable solid platinum back. Water resistant to 30 m (3 bar). Diamond at six o'clock

Diameter: 41.3 mm

Length (across lugs): 48.61 mm

Width (9 to 3 o'clock incl. crown): 44.35 mm; Overall height (crystal to lugs): 11.5 mm; Height (crystal to back): 11.07 mm

Width between lugs: 20 mm

Movement: Caliber 31-260 PS QL: self-winding mechanical movement. Full perpetual calendar with an in-line display of the day, date, and month. Leap-year cycle and day/night indicator. Moon-phases. Subsidiary seconds. Dimensions, 34 mm (basic caliber 31.74 mm, calendar module 34 mm) 5.8 m

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