This is a large 1970s Hamilton automatic chronograph known as the Fontainebleau. This example was designed by Buren and utilizes the same movement configuration as the Breitling and the Bulova movements of the era. This Hamilton houses a caliber 11 movement, which was the very first automatic winding chronograph movement produced. The steel case with screw-back measures a massive 47mm across and 14mm thick. The stainless steel case has never been polished. The original white-silver dial with black sub-registers looks fabulous having stark contrast. The crown is correct and signed. The automatic winding caliber 11 movement is functioning flawlessly after a $500 overhaul. This Hamilton offers a quick-set date feature. The original crystal and rubber seal are still present. These are highly sought-after watches.