Rolex Cosmograph Daytona 16523

Reference 16523 is the Yellow Rolesor model from the first generation of automatic Daytonas, produced from 1988 to 2000. It is powered by the Caliber 4030 (modified Zenith El Primero). The technical specification ‘Yellow Rolesor’ (3) denotes a bi-metal construction, combining a stainless steel case with a solid 18k yellow gold bezel, crown, and pushers, and a two-tone Oyster bracelet. The Ref. 16523 is historically significant as it was the first two-tone Daytona, bringing the newly automated model to a wider luxury market.