The “Datejust” title had turn into a permanent fixture on its dial, and various capabilities like the arms, bezel, hour markers, and crystal (with cyclops magnification lens) took forms that are still greatly present on the modern Datejust watches that Rolex manufactures nowadays. Whilst the 41mm Datejust II content the https://www.watchesworld.com/a-history-of-watch-reference-numbers/