I like the set. They are very simple. They are smaller extrusions than the Williams set. The lead unit has a single power truck with a Lionel pull-mor motor. Side frames are off NW2s I believe. They do not have sound. Mine came in the original set box an is numbered. It was also offered in PC and PRR but I have never seen one of those sets for sale.
For comparison, the Williams set is shown below: