The 116520 also highlighted a whole new case style with thicker lugs and a cultured bezel. In 2016, Rolex introduced the newest version on the Daytona, the reference 116500LN, which incorporates a ceramic bezel along with a black dial with white sub-dials. Possibly most vital with regard to horological history https://www.watchesworld.com/a-history-of-watch-reference-numbers/