Yes, as John said above, this is an early(ier) 1930 model. Note the shape of the fuel tank cap. Also, this truck is not equipped with dual rear wheels. Therefore it does need a spare tire.
I don't know if it was made for duals. I am thinking it was designed that way due to the box. The lower boxes are rather large to hold large tools. Maybe it was designed with duals in mind or it was just a happy coincidence.