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