Patek Philippe 3940G-013 Perpetual Calendar 18K White Gold Silver Dial FACTORY SEALED

The Patek Philippe 3940G-013 is one of the clearest expressions of the brand's modern perpetual calendar period. It pairs a 36 mm white gold case with a silver dial, and that restraint is a large part of the reference's appeal. Introduced as part of the 3940 family in 1985 and produced into the mid-2000s, the watch belongs to the mature run of one of Patek Philippe's most important serially produced grand complications. It is powered by the automatic caliber 240 Q, the ultra-thin micro-rotor movement behind the 3940's mix of mechanical complexity, slim proportions, and everyday practicality. The dial layout is especially well judged. Day and 24-hour indication sit at 9 o'clock, month and leap year at 3, and date with moonphase at 6. That display became one of the most recognizable formats in perpetual calendar watchmaking. The 3940 helped set the visual and technical template for the modern Patek Philippe perpetual calendar. It followed the earlier 3450 with a slimmer, more contemporary design. In white gold, the 3940G is particularly discreet, with all the substance of a grand complication and none of the added warmth or visibility of yellow or rose gold examples. The -013 designation refers to the silver dial variant, a clean, classical execution that suits the model well. This was a regular production reference rather than a country or boutique edition, and that is part of what makes it so appealing to collectors. Its importance comes from the watch itself: the caliber, the case proportions, and its place in Patek Philippe's late 20th century return to complicated wristwatches. For the seasoned buyer, the 3940G-013 remains a cornerstone reference, an ultra-thin perpetual calendar with real historical weight, powered by one of the manufacture's finest automatic calibers and sized in a way many later complicated dress watches still have not matched. This particular example is extremely rare as its still originaly factory sealed with Patek Philippe box, additional solid case back, setting pin and papers dated 2006.