I bought a detailed HO scale reefer car model recently at an antique store. It is painted yellow and is a model of a wooden sided car. it is lettered'' Butter Superior Brand Condensed Buttermilk Farmers Union Creameries Superior and Aurora Nebraska'' also lettered North American Despatch North American Car Corporation'' numbered NADX 4012.It has a multiboard per strip 3 strip roofwalk and 2 very detailed very old style hatches at each end.
What pre 1940 decade is this car from and do I need to modify it in any way to make it accurate.