You should Observe that starting up in 2005, Rolex started engraving the serial number to the internal bezel (also called the rehaut) under the crystal on the 6 o’clock posture. When in doubt, Choose a Serpenti in two-tone metals—a modern, putting watch which will hug your wrist just like a https://www.watchesworld.com/a-history-of-watch-reference-numbers/