Complications
Mark in Paris commemorates the tenth anniversary of Patek Philippe's in-house split-second chronograph movement, the CHR 27-525 PS, housed within the elegant 5959P. This article delves into the technical marvel of creating the slimmest split-second chronograph movement of its kind, highlighting the immense challenges and meticulous craftsmanship involved. Mark in Paris invites readers to appreciate the subtle yet profound engineering that defines Patek Philippe's approach to high horology.
It's been 10 years already since Patek Philippe has unveiled his first in-house Spilt-second chronograph movement: the CHR 27-525 PS.
As a reminder, here are the two versions produced:
It was the
first chronograph movement designed and manufactured entirely in-house for the
brand but it was also the slimmest of its kind (27.3 x 5.25 mm chronograph with
split-second) in the watchmaking world. It is thinner than the Lemania based CH
27-70 but with an additional Split-second complication.
People who
discover Patek's collection sometime ask, wisely, why such a difference in
pricing between models which seem to look alike (i.e. same complication choice
but much thinner).
Such a slim movement is really hard to design because it is made of smaller parts which are more difficult to manipulate in the manufacturing process of course but also because these specifications make the parts much more subject to reliability issues, may it be concerning the thin baseplate and bridges (important for the overall rigidity) or the resistance to shocks and wear and tear effects on the smaller parts (axles, pinions etc ...).
And, last but not least, the finish is of a very high level, especially when we consider the number of parts. Hence the beauty of the caliber is not only appealing due to the decoration but also because of the bridges and levers shapes.
The movement is equipped with an isolator that neutralizes the Rattrapante drag on the second sweep hand, thus allowing the torque output to remain quite constant.
And don't forget this movement is housed in the 33 mm case of the 5959P reference. Patek Philippe really walked the opposite direction from the increasing case size trend. This monopusher 5959P is incredibly elegant, very legible and keeps quite nice proportion regarding its width. Last but not least, the movement occupies the full volume of the case as you can imagine.
The choice of a lacquered dial was decided in order to keep the dial's thickness low compared to an enameled one for instance (thanks Suitbert for the explanation).
The least we can say is that Patek Philippe proved with this caliber (if it was necessary) that they perfectly master chronograph design as well as dimensions.
Happy 10 years birthday!
Cheers, Mark
The Patek Philippe Grand Complications reference 5959 is a split-seconds monopusher chronograph, a highly refined complication within the brand's extensive catalog. It stands out for its focus on a singular, technically demanding chronograph function, presented in a compact and classic form factor. This reference represents a commitment to traditional haute horlogerie, emphasizing mechanical complexity and artisanal finishing over additional grand complications.
This timepiece features a platinum case, measuring 33 mm in diameter, which contributes to its understated presence on the wrist. It houses the manually wound caliber CHR 27-525 PS, a movement celebrated for its thinness and intricate construction, including a column wheel and horizontal clutch. The watch is fitted with a sapphire crystal, allowing for a clear view of the dial and, through the exhibition case back, the meticulously finished movement.
For collectors, the 5959 appeals to those who appreciate the purity of a high-end chronograph without additional functions. Its limited production and the technical sophistication of its split-seconds monopusher mechanism make it a significant piece for enthusiasts of Patek Philippe's most complex offerings. The reference is known for its classic aesthetic, often paired with a black or white enamel dial, reinforcing its traditional appeal.
how slim the movement is !! Cheers Gordon
Elegant , and a beauty. Thanks for showing the insides of this watch. Appreciate it mark. Best. Geross
the woman chronograph in 2010 but this 5959P was presented a little while before! My pleasure :) Cheers, Mark
I like very complicated movements remaining thin. Quite an achievement. Thanks Gordon :) Cheers, Mark
elegant and beautiful as well as a mechanical marvel. I'm glad you appreciated it Geross :) Cheers, Mark
i have tried this piece on my wrist and was blown away Thanks for review Now waiting for the review on the 5370p- a totally different animal Julian
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