You are bidding on a nice looking, BIG lot of 30 vintage 1970s era, Aurora plastic N Scale yellow Canadian National, could be a few Western Maryland, incomplete bulkhead flat car bodies in the picture. 3 3/4 inches long. Only bodies, just about all have no bulkheads or trucks or couplers, most have bulkhead bottom parts on the ends, some missing lower steps, all could probably use some cleaning or use as shown  Zoom in for details.