The “Datejust” name experienced become a lasting fixture on its dial, as well as other features including the fingers, bezel, hour markers, and crystal (with cyclops magnification lens) took forms that are still very much current on the fashionable Datejust watches that Rolex manufactures currently. ST one hundred and five.003-65 https://www.watchesworld.com/a-history-of-watch-reference-numbers/