Reo Truck year

[blastermike]

Hi,  looking at possibly taking on a thirties reo which looks about 1 1/2  to 2 ton in size has dualls on the rear and has a split windscreen, owner told me its a 34 but from what ive seen on the net it looks more like a 38, can anyone tell me where to look for I/d nos, I have only two pictures which aren't that good because of how it is been stored in an old factory building with not much room to move, thanks mike.