The present watch is a rare new old stock example of the Cerachrom bezel Submariner made for the Sultanate of Oman, still retaining all factory seals.
Reference 116610LN was launched in 2010 together with its green bezel counterpart. It is the successor of celebrated Submariner Date reference 16610. The most apparent difference between the two models is the ceramic insert in the bezel, while before it was a simple metal insert. This new material, called "Cerachrom" by Rolex, was developed to improve the scratch resistance of the previous metal inserts.