Just as an aside: The Milwaukee had Mars lights on most of their cab engines, the first FT's being an exception. The early Lionel F-3's, the Williams F-3's and MTH's Railkink F3's all were made without a lower headlight opening. On the Milwaukee, the upper light was the Mars light; the lower was the actual headlight. You might check photos or look at the model to see if it is correctly represented before purchasing any model.
Paul Fischer