The Rolex Datejust 31, reference 68273, is an iconic mid-size watch produced approximately between 1987 and 1993. It features the 'Rolesor' design, combining the durability of Oystersteel with the luxury of 18k yellow gold. The 31mm Oyster case is waterproof, and the watch is powered by the automatic Caliber 2135 movement, renowned for its reliability and precision. It typically comes with an 18k yellow gold fluted bezel and a two-tone Jubilee bracelet. The white dial is a classic and widely available option for this model.