It would be a body built by Winter Weiss in Denver. They were a fine old line body company in Denver and, in their day, I bought a lot of bodies from them. They were the Wayne school bus distributor and also Miller Meteor and Cotner Bevington ambulance. They had an old buiding near the rail yards that was about 3 stories tall and they would drive the trucks up and down on ramps. They were a quality operation.
You need to be aware that there were not any Chevrolet approved bodies, other than stake and platform bodies. There were a lot of body builders, some better than others.
Just remembered that they were the distributor for Holmes Wrecker
