Rolex Datejust 16203

Reference 16203 is the smooth-bezel Rolesor model from the 36mm Datejust 162xx series, produced from approximately 1988 to 2005. The technical specification ‘Yellow Rolesor’ (3) denotes a bi-metal construction, combining a 904L steel case with a solid 18k yellow gold winding crown, bracelet center links, and a smooth, polished bezel (0 configuration code). The watch is powered by the Rolex Caliber 3135. Key technical variants during its long production run include the transition from drilled to non-drilled lug holes and the change in luminous material on the dial from tritium to LumiNova.