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Patek Philippe - Ref. 5236P In-line Perpetual Calendar

Patek Philippe Ref. 5236P-001 In-line Perpetual Calendar

Patek Philippe just unveiled the In-line Perpetual Calendar Reference 5236P-001, a brand-new perpetual calendar with a truly innovative in-line display that is adding to its rich range of calendar watches.

Patek Philippe Ref. 5236P-001 In-line Perpetual Calendar

Patek Philippe Ref. 5236P-001 In-line Perpetual Calendar

Day, date, and month are all shown in a single panoramic aperture at 12 o’clock. This in-line display was already adopted in some of the manufacture’s pocket watches but never before in a wristwatch. In fact, as you can imagine, this requires a high degree of miniaturization with many technical challenges.

The 46 mm Patek Philippe Ref. 725/4 pocket watch that inspired the new 5236P. For this specific piece, the movement was manufactured in 1956 and encased in 1971. Thanks to its larger case, it featured a single date disk, moving around the day of the week indication, with the 31 dates. Note the date notation in the American format.
Picture courtesy of Christie's.


Patek Philippe Ref. 5236P-001 In-line Perpetual Calendar

Patek Philippe Ref. 5236P-001 In-line Perpetual Calendar

To achieve the originality of this dial while combining legibility and reliability, Patek Philippe developed the new self-winding movement 31-260 PS QL with an additional in-line display module, for which three patent applications have been filed in 2019:

Display mechanism (ball-bearing display)
This display system featuring two “double ball bearings with coplanar balls” makes it possible for all the indications of the perpetual calendar to appear on one line in the same plane and without overlapping.

Shock absorber mechanism and/or anti-double-jump feature for watch movements
This mechanism improves the reliability of the date display as well as the perfect synchronization of the two numeral disks by suppressing a second jump of the date in the event of a jolt or when the date is being corrected.

Date: Switch from 31 to 01 
This mechanism assures that the unit remains in its position when the switch from the 31st to the 1st of the following month takes place. This is handled by a 31-point star from which two teeth were removed.

The in-line display system relies on four disks (of which two for the date) that are arranged on one level. It consists of 118 additional parts. It is complemented by two round apertures, one at 4 o'clock for the leap year cycle and one at 8 o'clock for the day/night indicator. 

Patek Philippe Ref. 5236P-001 In-line Perpetual Calendar

Patek Philippe Ref. 5236P-001 In-line Perpetual Calendar

A further window displays the moon phases at 6 o'clock, encircled by the small seconds. 

Patek Philippe Ref. 5236P-001 In-line Perpetual Calendar

To facilitate the adjustment of the functions, three correctors – for the day, the date, and the month – are recessed in the case flank between 9 and 2 o’clock, in the same order as the respective displays. The moon phase corrector is positioned at 8 o'clock.

Patek Philippe Ref. 5236P-001 In-line Perpetual Calendar

Patek Philippe Ref. 5236P-001 In-line Perpetual Calendar

Featuring a recessed micro-rotor, the 31-260 PS QL calibre beats at the frequency of 4 Hz (28,800 vibrations per hour) with an autonomy of 38 hours to 48 hours.

Patek Philippe Ref. 5236P-001 In-line Perpetual Calendar

Patek Philippe Ref. 5236P-001 In-line Perpetual Calendar

Patek Philippe Ref. 5236P-001 In-line Perpetual Calendar

Patek Philippe Ref. 5236P-001 In-line Perpetual Calendar

Completed by applied hour markers and baton hands in white gold, the beautiful vertical satin-finished blue dial with black-gradient rim is framed by a precious fully hand-polished 41.3 mm x 11.07 mm platinum case that offers water resistance to 30 metres / 100 feet. 

Patek Philippe Ref. 5236P-001 In-line Perpetual Calendar

The new Patek Philippe Ref. 5236P-001 In-line Perpetual Calendar is matched to a navy blue alligator leather strap, secured to the wrist by a fold-over clasp, and has a price of Euro 115,060. patek.com

Patek Philippe Ref. 5236P-001 In-line Perpetual Calendar

Patek Philippe Ref. 5236P-001 In-line Perpetual Calendar

COMMENTS

BLOGGER: 3
  1. Well done by PP. Not the aberration from AP that they announced last Saturday. Different style and class.

    ReplyDelete
  2. The solution is very clever. Can we define that display a computer?

    ReplyDelete
    Replies
    1. Indeed! It's a mechanical computer. Instead of using electronic components, it is built from components like wheels, gears and levers.

      Delete

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Time and Watches | The watch blog: Patek Philippe - Ref. 5236P In-line Perpetual Calendar
Patek Philippe - Ref. 5236P In-line Perpetual Calendar
Patek Philippe just unveiled the Ref. 5236P In-line Perpetual Calendar, the first wristwatch with an inline perpetual calendar. Price €115060
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Time and Watches | The watch blog
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