This is an amazing heavy-duty hand-built model that you really have to look over. The main components are the firebox and boiler, formed from cast iron that has been joined together. The front spoked steel wheels swivel and roll. The large, spoked steel rear wheels are fixed into position and do not roll. A simulated steam engine is mounted to the top operates by turning the drive wheel which moves the piston while also actuating a cam driven lever. The boiler's front door opens to reveal the interior of that unit. This may have been built by the father of a very lucky child or could have been produced to simply show off the craftsman's skill. 17" L x 8" W x 12.5" H.