Original hose clamp, possibly the original hose, Get your cooling hoses replaced and fresh coolant installed. Vehicle of that vintage is ready for new "rubber" including the serpentine belt.
Check the fan fluid clutch to make sure it has resistance and does not wobble. If it spins freely with no resistance, you want it replaced. There are many things on a vehicle that can be bad and you don't notice until you start towing or hauling heavy loads and suddenly you find the bad stuff.
Also get your differential fluid front and rear changed, synthetic is preferred. Everything you can do to bullet proof the vehicle from future problems is a good thing.
If I am understanding what I am looking at, the rear of the vehicle is to the right, and the radiator hose comes out the front of the radiator, runs across to the drivers side where it passes under the radiator on its way aft to the water pump. I can see the fan shroud to the right, behind the radiator.
Never seen an installation like that. Do note that the transmission line closest to you in the pic runs up thru the rubber air dam attached to the bottom of the radiator, and one other line on the other side does also. Look from the top down with the hood open, or thru the grill or opening below the grill and you will probably find the cooler.
Charles