The Rolex Sky-Dweller in 18k yellow gold represents the pinnacle of horological innovation. This 42mm timepiece features the revolutionary annual calendar mechanism, eliminating the need for adjustment except in February. The distinctive Oyster case combines robust construction with refined aesthetics, while the Perpetual rotor ensures reliable self-winding performance. Housed in its original box with complete documentation, this 2017 reference 326938 exemplifies Rolex's commitment to precision and craftsmanship. A collector's piece that seamlessly blends technical mastery with timeless elegance.