"Milk" Truck metal with rubber wheels and similar items

On the underside of this piece in the roof it has "Made in USA" embossed. The first thing you notice about this truck is that it is either dirty or has a lot of scratches in the paint and I think it is both. The word "MILK" is more faded on one side but certainly legible. It reminds me of the late forties. The wheels are rubber. It does not roll freely although they do roll. The metal is very heavy or thick and there does not appear to be any dents or broken pieces. It looks cast to me but my knowledge is limited. We must collect 6% Pennsylvania Sales and Use Tax at checkout. Thanks for stopping by!