I'll place my guess. I agree with John and Bill. Pre '50 so I'm placing my guess at 49, and I'll bet on 2 ton.
While we're on this topic, anybody ever find a consistency among front bumpers to identify 1.5 or 2 ton trucks? It seems that in regard to the 41-47e trucks, the chrome pick-up type bumper usually is found on 1.5 ton models, and the larger commercial bumper usually indicates 2 ton models. I haven't seen enough trucks to decide if this is true in all cases.