For many years, the ultra-thin self-winding perpetual calendar watch has been one of Patek Philippe’s most popular and sophisticated timepieces. The workshop now has a new look and re-launch of the watch, highlighting the brand’s unique tradition of perpetual chronometers: watch number 5940, with a cushion-shaped case made of 18K yellow gold. Among the top-level complex features, such as the tourbillon, minute repeater, and dual-hand chronograph stopwatch, the perpetual calendar undoubtedly exerts the greatest daily practical performance. This device can take into account the difference in the length of the month and accurately indicate the date data. Going back to the 19th century, the perpetual calendar is the most demanding complex performance of Patek Philippe pocket watches; and the rise of watches, the Geneva watchmaker took the lead in miniaturizing this clever device to match the watch’s case use, device size Compared to today’s style, it is more compact.
In 1925, Patek Philippe launched the world’s first watch with a perpetual calendar performance. The watch number 97’975 is equipped with an hour hand and a minute hand, with a small three-hand sub-display at 9 o’clock on the surface, and the moon phase display at the three o’clock. The watch uses a pointer-type annual calendar to display the date with a central hand, the day of the week display at 12 o’clock, and the month at 6 o’clock. The device operation of that year took into account the leap year cycle, but it did not display on the surface with a special four-year cycle display panel, as is the case with today’s models. Each calendar display is displayed in an instant, which can be a challenge.
At a similar time, the Art Nouveau emerged in Europe, bringing distinctive and innovative style elements, which deeply influenced local art, architecture, furniture, and product design, and its persuasion never diminished. Patek Philippe also blends this emerging style, but instead of creating a momentary fashion, it establishes a watch design philosophy that lasts and develops and implements it in its Gondolo timepiece series. This category, called ‘geometric watches,’ encompasses all non-circular cases, which can be square, rectangular, triangular, diamond, barrel-shaped or cushion-shaped. At that time, the wristwatch was popular soon, and it was very eye-catching. It immediately became a life accessory designed by Rao Fu. This trend is still the same today. At that time, Patek Philippe’s cushion-shaped timepieces were very popular, and some models have now become the collection of the Patek Philippe Timepiece History Museum for people to appreciate. Calatrava’s classic round design, the unique body of Golden Ellipse, and Nautilus’ unique style of leisure and elegance, fully convey Patek Philippe’s timeless and beautiful design style.
5940J perpetual calendar watch, 18K yellow gold case, diameter 44.6×37 mm, hours, minutes, seconds, moon phases, perpetual calendar, 240 Q automatic winding movement, power reserve 48 hours, alligator leather strap.
Its cushion-shaped case reappeared for the first time in 2010, with the ultra-thin single-button two-hand chronograph stopwatch number 5950, made of steel. Today, this case is back with a new ultra-thin perpetual calendar watch number 5940. The new watch has a length of 44.6 mm and a width of 37 mm. It is fashionable in shape and exudes a masculine atmosphere. Its thickness is only 8.6 mm. In the Patek Philippe workshop, the staff used traditional cold forging technology to make compact 18K gold case prototypes on the press with more than a ton of pressure, and then carried out numerous cutting processes in succession to achieve such beautiful body lines. Finally, each case was polished by hand for a long time to create a mirror-like effect. The arc on the front side is the same, as if it is integrated with the lugs, and it is seamless. The watch is equipped with an airtight sapphire glass case back so that the watch owner can examine how the hand-crafted movement works. A gold case back can also be replaced.
The 240Q ultra-thin self-winding perpetual calendar movement is composed of 275 independent components and is self-winding, but only 3.88 mm thick.
The 240 Q movement is a masterpiece of technology, manufactured by Patek Philippe’s sophisticated watchmaking studio. The movement is made up of 275 independent parts and is self-winding, but only 3.88 mm thick. The basic movement came out in 1977, and the 22K gold side-mounted mini-swinging top was embedded in the bottom plate, taking up 2.53 mm of the overall thickness. In other words, there is only 1.35 millimeters of mechanical memory space in the table to maintain the display operation throughout the four-year cycle, while imitating the situation of the lunar trajectory. The perpetual calendar device indicates the correct date and automatically takes into account changes on the 31st, 30th, 28th, and 29th of February of the following year. The installation will continue to operate and it will not be necessary to delete the display of the twenty-ninth day by hand in February according to the Gregorian calendar in 2010. The calibration process is quick and easy, as long as the watch remains on the chain, the date data can continue to be displayed accurately for the next 100 years. The moon phase display is equally accurate: a one-day error from the actual moon position occurs every 222 years, which is equivalent to a daily error of only 0.002 ‰. Finally, the speed performance of the movement is amazing, which is an important part of achieving accurate timing. According to the Patek Philippe imprint requirements for all mechanical movements with a diameter of more than 20 mm, the movement tolerance is -3 to +2 seconds per day, which is higher than the requirements of officially certified precision timers.
The 5940 ultra-thin perpetual calendar watch is 44.6 mm long, 37 mm wide, and only 8.6 mm thick.
The surface shows the watch’s extraordinary speed performance, and every detail exudes a timeless and elegant atmosphere. The pale yellow frosted surface matches the golden brilliance of the case. The track minute scale is added along the contour of the ring by transfer. The surface is equipped with Breguet-type numerals and beautiful leaf-shaped gold hands to indicate the time. Three auxiliary display panels are provided to display the calendar data: week at 9 o’clock And 24-hour auxiliary display; moon phase and leap year cycle display at 3 o’clock; analog date and moon phase display at 6 o’clock. The surface adheres to Patek Philippe’s consistent timepiece characteristics, and all instructions are arranged in an orderly and legible manner.
Patek Philippe launches new watch number 5940, opening a new page in the development of perpetual chronographs, reviving cushion-shaped case, making the watch as the Patek Philippe Timepiece History Museum displays each piece from the Art Nouveau period of 1920s and 1930s In that way, it attracted much attention and became a good story. The watch features a matte black alligator leather strap with a square texture, hand-sewn and 18K yellow gold pin buckle.