ROLEX, DAYTONA, TWO-TONE 18K YELLOW GOLD & STEEL, REF. 116523

Reference 116523 was launched at the 2000 Baselworld together with ref. 116500 in steel and 116528 in gold, the first Daytona models equipped with a fully in-house Rolex movement, caliber 4130. With fewer components, meaning improved reliability and an easier servicing procedure, this new movement also had an increased the power reserve: 72 hours compared to its predecessors 54.