A recent purchase off E Bay, seller had no clue as it was purchased at a garage sale. Now I am stumped who how and when. Loco motorize, has an on/off switch on the bottom, cast iron upper tram unit, it is made of wood with the sides made of celluloid. Loco and cars measure 10 1/2 inches in length. They all have lamps and sockets to light up each unit. Typical hooks & loops to connect.. Pole base is iron, wood pole, and wire track supports. the celluloid painted sides are tacked on the the units. How they suspend I am unsure as there are no holes on top for supports to the overhead track. I hope I can get some idea on the units. Thanks.