Make sure you note that starting in 2005, Rolex commenced engraving the serial selection around the inner bezel (also referred to as the rehaut) under the crystal in the 6 o’clock posture. Though the crystals within the 160xx generation of Datejust watches are still created from acrylic, the sloped "pie https://www.watchesworld.com/a-history-of-watch-reference-numbers/