Cartier’s new timepiece from the Pre-SIHH 2018 collection is christened the Cartier Rotonde de Cartier Mysterious Day & Night, a name as alluring as the watch itself. A modern spin on the original and iconic Mystery Clock by Cartier produced in 1912, this one features the Day & Night function designed for the first time in the same year. While the top half of the dial features the mystery day and night feature, using a pair of indicators showing the sun and the moon, the bottom half features a retrograde style minute display with a lone bright blue steel hand punctuating the dial. The dial itself has at its center a circular Guilloché motif, with a dark brown tone and Sun Beam pattern on the outer part. Powered by the brand’s in-house hand wound movement Caliber 9982 MC capable of providing 48 hours of power reserve, the timepiece is available in either 18K white or pink gold with a 40mm gold case and the brand’s signature cabochon blue sapphire winding crown. Priced at $63,000 the watch will be available for sale next year.