This vintage Rolex Cosmograph Daytona Ref. 16520, A-series, represents the final production of the iconic Zenith-powered generation. Preserved in excellent condition, this example features a 40 mm stainless steel case with sharp edges and original proportions. The black dial, with contrasting silver sub-dials, offers perfect legibility and timeless racing aesthetics. Powered by the automatic Caliber 4030, based on the Zenith El Primero and modified by Rolex, it delivers outstanding reliability and precision. This piece is fitted with the desirable SEL (Solid End Link) Oyster bracelet, enhancing both robustness and wrist presence. Offered as a full set, complete with original box, papers, and hangtag, this last A8-series Daytona is a highly collectible example of one of the most celebrated modern Rolex references.