Rolex Day-Date President 18048

Reference 18048 designates the factory diamond-bezel Day-Date from the 180xx series, produced from approximately 1978 to 1988. This reference is historically significant as it introduced two key technical upgrades to the diamond-set Day-Date. It is powered by the Caliber 3055, a 27-jewel movement whose ‘single quickset’ mechanism allows for independent, rapid setting of the date via the crown. It was also the first diamond-set Day-Date to be fitted with a flat, scratch-resistant sapphire crystal. The 36mm Oyster case is constructed from 18k yellow gold (8) and is defined by its factory-set brilliant-cut diamond bezel, denoted by the 4 in the reference, typically comprising 44 to 46 stones.