WHY THIS WATCH
This is Submariner is a 16610 "T", which stands for transitional. This watch is a 2007/2008 model, which was a few years before Rolex released the newer version of the Submariner with the maxi case and ceramic bezel in 2010. This watch is the "Newest of the Old", meaning it's the most refreshed version of a 16610 outside of a 2009 example, that you can find. The serial number is on the Rehault (inner bezel) for these watches, which is rare, considering most subs are only between the bezel.