This looks like a Class 200 0-4-0 diesel shunter, popularly known as a "Sik" (Goat). A total of 169 were built between 1934 and 1951 by Werkspoor and NS (Nederlandse Spoorwegen) Zwolle Works. The engine is a 63 kW Stork R153. They have electric transmission, consisting of 2 Heemaf TM6 or Smit GT axcle-hung motors. The weight is 21 tonnes, in full working order. The wheel diameter is 1 metre. The fuel tank containing diesel acted as coolant for the engine. The flow of exhaust gas is used for a whistle, as there is no air pressure system.