"The ice blue dial features a guilloché rice-grain motif. This rosette-like design is distinctive for its three-dimensional, repeating geometric pattern that extends across the surface of the dial starting from the small seconds counter at 6 o’clock. The minute track is surrounded by a filet sauté with crimped pattern, which is also guilloché. With the introduction of a dial created via guillochage, or engine turning – a technique that uses a turning tool to sculpt a pattern into a surface – Rolex is pursuing the course it has set for the Perpetual collection as a tribute to the classic art of watchmaking infused with the brand’s know-how and creativity. This exclusive dial bears the same Arabic numerals 3, 9 and 12, the same faceted hour markers and the same hands as that of the 18 ct gold versions. This exclusive dial colour can be found only on the Day-Date, the Cosmograph Daytona and the Perpetual 1908."