Rolex Day-Date President 18239

The Reference 18239, produced from 1988 to c. 2000, is a cornerstone of the Day-Date collection. Its technical specification is a 36mm case in 18k white gold (9) with a classic fluted bezel (3). This reference is historically significant as it belongs to the first series (182xx) to house the Caliber 3155 movement, introducing the “double quickset” function. This major technical upgrade allowed for the independent and rapid setting of both the day and date displays, a significant improvement in user convenience. The 18239 combines this modern mechanical functionality with the classic, slimmer case and brushed-lug profile of the five-digit references, making it a pivotal “transitional” model for the Day-Date line.