No. 4389 also known as "Davenport 2533" is an S100 Class 0-6-0 steam locomotive that was built by the Davenport Locomotive Works in 1943 for the United States Army's Transportation Corps.
This locomotive was built in accordance with the American war construction design: simple to construct and easy to maintain. The result is a combination of welded and riveted, a staved frame, Crampton firebox with a grill surface of 1,78m² (approx 10 sq. feet), relatively large sized wheels (1.372 mm / approx. 54 ") and cylinders that consist of two assembled castings and which at the same time are supporting the smokebox. The accessories on top of the boiler provide the engine with a typical American profile.
During World War II, locomotives of this type were used for switching (shunting) duties in Europe and North Africa.
In 1947, Oranje-Nassau Mijnen, a coal mining company in the Netherlands acquired two S100's (USATC 4389 and 1948) from the army surplus stores and numbered them ON-26 (Davenport 2533) and ON-27 (Davenport 2513) respectively to be used for shunting operations. The ON-26 survived the scrapyard and was sold to the museum railway Stoomtrein Goes-Borsele and still resides there to this day providing passenger excursion trips.