The 116520 also featured a completely new case design with thicker lugs and a sophisticated bezel. In 2016, Rolex launched the most up-to-date version in the Daytona, the reference 116500LN, which contains a ceramic bezel plus a black dial with white sub-dials. When in doubt, Opt for a Serpenti in https://www.watchesworld.com/a-history-of-watch-reference-numbers/