The Patek Philippe Grand Complications reference 5374/300P-001 is a highly exclusive Haute Joaillerie timepiece that combines a minute repeater with a perpetual calendar. The watch features a 42mm platinum case with a thickness of 12.28 mm, meticulously set with 228 baguette-cut diamonds totaling approximately 11.62 carats across the bezel, caseband, lugs, and slide piece. Its blue-lacquered dial exhibits a black-gradient rim and is adorned with 13 baguette-cut sapphire hour markers. The watch is powered by the self-winding caliber R 27 Q, which includes a 22K gold off-center mini-rotor and provides a power reserve ranging from 38 to 48 hours. Due to the delicacy of the minute repeater slide, the case is humidity- and dust-protected only and is not water-resistant.
This model is distinguished by its complex mechanical functions, most notably the minute repeater that chimes on two cathedral gongs, which are longer than standard gongs to produce a deeper and more resonant sound. The perpetual calendar accurately tracks the day, date, month, leap year, and 24-hour cycle via hands on snailed subdials, while a moon phase indicator is positioned at 6 o’clock. The time is displayed with white gold leaf-shaped hands coated with luminescent material for legibility. The timepiece is completed with a shiny dusk blue alligator leather strap secured by a platinum fold-over clasp set with an additional 22 baguette-cut diamonds.
General reviews of the 5374/300P-001 emphasize its status as a pinnacle of horological artistry and gem-setting. Collectors often highlight the spectacular depth effect created by the “amphitheater” design of the diamond-set flange and the rich, sonorous quality of the cathedral gongs. While the 42mm diameter is considered large for a traditional grand complication, critics note that the proportions are necessary to maintain a balanced dial layout given the complexity of the indications. The watch is frequently praised for its ability to merge high jewelry aesthetics with serious mechanical watchmaking, though its extreme rarity and “Price on Request” status make it accessible only to the brand’s most elite clientele.