Please Observe that beginning in 2005, Rolex started engraving the serial amount about the inner bezel (also known as the rehaut) underneath the crystal in the 6 o’clock place. When in doubt, Select a Serpenti in two-tone metals—a sleek, placing watch that can hug your wrist just like a second https://www.watchesworld.com/a-history-of-watch-reference-numbers/