pretty sure from the hood design it is a 48 or close to that. I have a picture of a 48 Phillips service truck a similar design somewhere; will try to find it.
That would be my guess on the vintage too; it looks very similar to an old Studebaker yard truck that our church had for use around the cemetery and grounds. I learned to drive standard shift on it several years before I had a license One thing I do recall was its arm-strong steering.