You should Observe that setting up in 2005, Rolex began engraving the serial quantity to the internal bezel (also known as the rehaut) underneath the crystal with the 6 o’clock placement. Excess weight: Authentic Rolex watches are made out of significant-excellent elements, typically causing a heavier feel than counterfeit watches. https://www.watchesworld.com/a-history-of-watch-reference-numbers/