Please Take note that starting in 2005, Rolex commenced engraving the serial number around the inner bezel (also known as the rehaut) beneath the crystal within the 6 o’clock placement. Guys's watches: The Pagani Layout Adult males's watch makes use of a stainless-steel case and is supplied with luminous fingers. https://www.watchesworld.com/a-history-of-watch-reference-numbers/