Patek Philippe opened its seventh Watch Art Grand Exhibition in Milan this week, taking over the CityOval building in the CityLife district with more than 500 historic timepieces and live demonstrations of the maison’s rare handcrafts. The exhibition runs through October 18, and its centerpiece is the most technically ambitious new Patek of the year: the Ref. 5978P-010, the first watch in the maison’s history to fuse its hand-wound chronograph architecture with an instantaneous perpetual calendar.
The 5978P-010 is a 120-piece limited edition in 950 platinum, with a 42 mm case that measures 14.45 mm including the sapphire crystal. It is powered by the all-new Calibre CH 29-535 PS QI, a 500-component hand-wound movement and, according to the brand, the first of its calibres to combine the hand-wound chronograph base with an instantaneous perpetual calendar. That makes the 5978P only the seventh manually wound perpetual calendar chronograph in Patek Philippe’s history, and the first since 2011.
The headline technical claim is the speed of the calendar jump. All of the calendar indications (day, date, month and leap year) switch together in roughly 30 milliseconds at midnight, and the chronograph’s 30-minute counter is also instantaneous rather than trailing. “At midnight, you have suddenly a click,” Thierry Stern told journalists at the press preview, according to luxe.digital. The calendar indications are presented in Italian, a Milan-exclusive touch visible in the brand’s press images, where the day aperture reads SAB and the month aperture reads MAR. A day/night indication and a moonphase sit together at 6 o’clock.
The dial is sunburst navy blue with a black-gradient rim and a textured center. Applied white-gold hour markers and dauphine hands carry a luminescent coating, while the chronograph hands are varnished red. A diamond is set at 6 o’clock. The watch ships on a navy composite strap with a fabric pattern and red stitching, the red picking up the Italian-flag accent the maison built into the design, and the sapphire caseback is inscribed “Patek Philippe Milano 2026.” The brand lists the piece at $337,585 on its product page; pricing in other regions varies, and published reports cite different regional figures.
The 5978P does not stand alone. Patek created seven limited editions exclusively for the Italian market around the exhibition. Alongside the 5978P comes a steel Aquanaut, the 5167A-014, limited to 250 pieces, and a Calatrava trio in the colors of the Italian flag: a red 7047G-010 minute repeater in five pieces, a green 7147G-010 perpetual calendar in 100 pieces, and a white 7007G-010 in 200 pieces. Two World Time minute repeaters, the 5531G-012 and 5531G-013, each limited to five pieces, carry cloisonné-enamel maps of Milan, one by day and one by night.
Milan also marks the return of a dormant line. The six-model Gondolo Ladies First collection offers six cushion-shaped quartz watches, 31 by 34.8 mm, inspired by the 2009 Ladies First Chronograph. Three carry diamond-set flanges and three arrive as Joaillerie versions with amethyst, tsavorite or blue topaz hour markers.
Stern used the Milan stage for a statement of intent as much as a product launch. Asked about the future of the family-owned maison, he told journalists that “the target is to stay independent,” ruling out any sale, and he was joined at the presentation by his eldest son, 24-year-old Adrien Stern, one of his two sons. Stern, born in 1970, said: “We do not have a timetable. My dad stayed until he was around 75, and that is too late for me. I would like to stop earlier, but I will always be there.” And: “Being independent allows me to choose my own destiny and my own strategy... by having 100% of the shares, I can choose what to do,” according to WatchPro.
For a publication that covers how watches are made, the 5978P matters less for its edition size than for what it asks of the movement. Fusing the maison’s hand-wound chronograph platform with an instantaneous calendar meant engineering two famously energy-hungry complications to fire at once without disturbing timekeeping. We have not handled the 5978P; this assessment is from the brand’s published specifications and press photography. Judging from that material, the result is presented as a watchmaker’s watch first and a Milan souvenir second, with the exhibition itself as the point: Patek brought its museum and its workshops to Italy rather than another novelty to a trade fair.
