the line sequence numbers ran the whole year at each plant ... the "DP" is actually the model, a 1/2T, the E alone indicates May production
46 was controlled by the gubmint: "
Chevrolet brought to market a full line (100 models on 9 wheelbases) of light-, medium- and heavy-duty trucks on May 1, 1946" .... it may be that, with parts being in limited supply, and the sequence numbers being specific to each plant, Janesville didn't start production until May
the 46 model year production had 2 groups, "interim" or early and the late series - 46 model production didn't start until early 46, and not at all plants at once - the late series was what we call the 47.1 or early 47
Bill
