Thank you all for the great info!
The truck has the metal tag on the glove box
Nomenclature
Truck, van with cab, 4x2
Make and model - Chevrolet 6403
Delivery date - 7/1959
Contract #
Da-20-113 ord 24761
It has U.S. property and a small eagle with 3 stars above its head. As well as weights and federal stock #.
Ill have to figure out how to put the picture link on the reply so everyone can see it.
I was told it was an Air Force truck. It had no box on the back when I picked it up. Maybe it just had a van cargo box on it as it states a truck van. Nothing great like a 6x6 but still a little history.