Judging by the size of the front tires, this rig is destined for some heavy work.
I have featured these revolutionary (at the time) COEs here before. See: http://truckfax.blogspot.ca/2013/10/kenworth-aerodyne-coe-blasting-in-from.html
The classic good looks of the KW COE mean that these cabs are still in demand for rebuilds. So far Kenworth has not offered their new COE for sale in North America (Freightliner sells their on a limted basis as a glider). KW developed an upgraded COE for the Australian market several years ago: