Remember to Notice that starting up in 2005, Rolex commenced engraving the serial variety about the interior bezel (also called the rehaut) beneath the crystal within the 6 o’clock place. Body weight: Authentic Rolex watches are created from large-high quality materials, generally leading to a heavier experience than counterfeit watches. https://www.watchesworld.com/a-history-of-watch-reference-numbers/