Patek Philippe gives one of its most technically accomplished perpetual calendars a distinctly restrained new appearance with the In-Line Perpetual Calendar Ref. 5236P-011. Replacing the previous blue and salmon dial executions, the new platinum model combines a silvery-grey gradient dial with the remarkable four-disc calendar mechanism that displays the day, date and month together in a single panoramic aperture at 12 o’clock.
The Patek Philippe In-Line Perpetual Calendar Ref. 5236P-011 features a fully polished 950 platinum case measuring 41.3mm in diameter and 11.07mm thick. Its contemporary proportions are shaped by sharply inclined lugs, a substantial case middle and a sloping polished bezel, while four discreet correctors are integrated into the case to allow adjustment of the calendar indications. As with Patek Philippe’s platinum watches, a small diamond is set into the case at 6 o’clock.

On the flip-side a sapphire crystal caseback reveals the in-house caliber 31-260 PS QL and its off-centred platinum micro-rotor. The movement incorporates 503 components and is extensively finished, with Geneva stripes decorating the slender finger bridges alongside polished bevels, perlage, circular graining and polished countersinks. The transparent construction also provides a view of the unusually compact architecture required to accommodate the complex in-line perpetual calendar mechanism.

The crown maintains the restrained proportions of the polished platinum case, while the four calendar correctors are positioned discreetly around its flanks. A sapphire crystal protects the dial, complemented by the sapphire crystal incorporated into the caseback. Water-resistance can reach up to 30 meters (98 feet).

The defining change for Ref. 5236P-011 is its silvery-grey dial, decorated with a vertical satin finish and a gradient treatment that darkens toward the perimeter. Its metallic surface changes considerably according to the surrounding light and viewing angle, shifting from cooler silver tones toward deeper grey and occasionally warmer sepia-like reflections. 

The restrained palette places particular emphasis on the architecture of the calendar display while giving the watch a notably different personality from the discontinued blue and salmon versions.

Faceted baton-style hour markers and hands are made from white gold and treated in charcoal grey to complement the dial. At 12 o’clock, the perpetual calendar presents the day, date and month along a single horizontal line using four rotating discs positioned on the same plane: one for the day, two for the date and one for the month. At 6 o’clock, a snailed small-seconds counter incorporates the precision moon-phase display, while circular apertures at 4 and 8 o’clock indicate the leap-year cycle and day/night status respectively. A snailed railway-style minute track completes the periphery.

Off-white surfaces within the principal calendar aperture, small-seconds display and peripheral minute track provide subtle contrast against the metallic grey dial. Despite the amount of calendar information presented, consolidating the three principal indications into the panoramic aperture leaves considerably more open space than a conventional multi-subdial perpetual calendar. The mechanism behind that deceptively simple display requires 118 additional components solely to operate and align its four calendar discs.

Patek Philippe In-Line Perpetual Calendar 5236P-011

The “Patek Philippe In-Line Perpetual Calendar” (Ref#: 5236P-011) is powered by the in-house self-winding mechanical movement, caliber 31-260 PS QL with 55 jewels, 503 components and 28,800 vph. It comes equipped with a platinum micro-rotor, hours, minutes, small seconds, an in-line perpetual calendar displaying the day, date and month, leap-year cycle, day/night indication and precision moon phases, while carrying the Patek Philippe Seal. Power reserve can last between 38 and 48 hours, when fully wound.

Mounted on this watch is a charcoal-grey composite strap with a fabric-patterned surface and contrasting cream top stitching. Its technical, contemporary appearance complements the silvery-grey dial while maintaining the restrained character of the platinum case, and it is secured by Patek Philippe’s patented triple-blade folding clasp crafted from matching platinum.

MSRP: $156,039.00 USD

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Patek Philippe, Perpetual Calendar, In-Line, 5236P, Watches & Wonders, Luxury Watches