The “Datejust” identify experienced become a permanent fixture on its dial, as well as other attributes like the hands, bezel, hour markers, and crystal (with cyclops magnification lens) took forms that are still very much existing on the fashionable Datejust watches that Rolex manufactures now. Though the 41mm Datejust II https://www.watchesworld.com/a-history-of-watch-reference-numbers/