Patek Philippe this week launches a platinum-cased Grand Complication, the Ref. 6301P Grande and Petite Sonnerie, Minute Repeater with Jumping Seconds, the Geneva watchmaker’s primary technical watch debut for 2020.
With its black grand feu enamel dial, slanted Breguet numerals and relatively unadorned time and power reserve indications, the new watch understates its impressive and complex chiming mechanism. While eyeing a classically presented time display, a wearer can also place an ear to the 44.8mm case and enjoy a rarely orchestrated symphony of three gongs: a grande sonnerie (full strike), petite sonnerie (small strike) and an on-demand minute repeater.
Patek Philippe has also added an unexpected layer of complexity to the new watch by incorporating a jumping seconds indicator, prominently displayed at the 6 o’clock position on the dial. Patek Philippe looked to its Reference 5275 from 2014 for inspiration on this complication, as that chiming model boasted jumping hours, minutes and seconds.
Patek Philippe watchmakers, well-versed in designing and building the brand’s highly regarded and extensive range of chiming watches, developed the new caliber GS 36-750 PS IRM movement directly inspired by Caliber 300 used in the Patek Philippe Grandmaster Chime Ref. 6300 from 2014.
Unlike most chiming watches from Patek Philippe and elsewhere, the new watch’s chime control center is located below the 6 o’clock position rather than on the left side of the case. On this watch, the selector can be adjusted to petite sonnerie mode (left side), grande sonnerie (center) and silence (right). The user activates the minute repeater on request with the pusher in the winding crown.
Because Patek Philippe opted to place that strike mode selector at 6 o’clock on the case, the watchmaker needed to move its traditional small-diamond platinum case indicator to the side of the case at the 12 o’clock position.
Two series-connected twin mainspring barrels power the new caliber GS 36-750 PS IRM movement. One assures a power reserve of 24 hours for the striking mechanism while the second ensures a 72-hour power reserve for the movement.
All this chiming and timing occurs within a platinum case that may look familiar. Inspired by the Ref. 5370 split-seconds chronograph Patek Philippe presented in 2015, the case features rounded contours, a concave bezel and a slightly cambered sapphire crystal.
In summary, the new Patek Philippe Ref. 6301P Grande Sonnerie includes these six complications:
- Grande sonnerie
- Petite sonnerie
- Minute repeater
- Movement power-reserve indicator
- Strikework power-reserve indicator
- Jumping seconds
In addition, the new watch offers unique technical achievements that have resulted in the Geneva watchmaker earning three patents, which Patek Philippe describes below:
- Isolation of the grande sonnerie in the silence mode (Patent CH 704 950 B1). In the silence mode, this mechanism totally isolates the grande sonnerie from the power flow and eliminates energy consumption.
- Selection of the strike work mode (Patent CH 706 080 B1). This mechanism enables the selection of the strike work mode (petite sonnerie, grande sonnerie, silence) with a single lever and a single slide switch. Two slide switches were formerly required for this operation.
- Jumping display with a jumping seconds wheel (Patent CH 707 181 A2). This innovative mechanism for jumping displays does not require springs and levers but instead uses wheels and a release lever that instantaneously unblocks the wheel train every second, and features a coiled return spring as the only power element. The advantage of this system is that it makes energy consumption easier to regulate and control.
Patek Philippe will offer the new Ref. 6301P Grande Sonnerie on a shiny black, hand-stitched alligator leather strap with square scales, secured with a fold-over clasp. The price for the limited production watch is available upon request.
Specifications: Patek Philippe Ref. 6310P Grande and Petite Sonnerie, Minute Repeater with Jumping Seconds
Movement: Patek Philippe Caliber GS 36-750 PS IRM, manual winding, minute repeater with 3 classic gongs, grande sonnerie, petite sonnerie, jumping small seconds at 6 o’clock, power reserve indicators for the movement (72h) and for the strike work (24h), frequency of 25,200 bph (3.5 Hz), power reserve of 72 hours, strike work power reserve of 24 hours.
Dial: Grand Feu black enamel with glazed finish, gold applied Breguet numerals, 18-karat gold dial plate, white gold leaf-shaped hands with luminescent coating.
Case: 44.8 mm by 12mm platinum, humidity-and dust-protected only (not water-resistant), interchangeable solid and sapphire crystal case backs.
Strap: Alligator leather with square scales, hand-stitched, shiny black, fold-over clasp.