During the years 1988 to 2000, Rolex Daytona watches were outfitted with a reliable movement from Zenith, and represent the time period where the Rolex Daytona really began its cult status, due to limited production, accuracy, reliability and supply.
The second-hand sub-dial on the Zenith Movement version is located at the 9:00 position, rather than the 6:00 position as is on the Rolex movement version in the photo above.