These coal wagons were built time between 1924 en 1929 mainly for the transport of coal. Thousands of these wagons were built. Originally they were painted in a anthracite gray colour. In the fifties this colour was replaced by freight wagon brown. They operated until the late sixties. Of all these coal wagons only 3 are left. One at the Museumstoomtram Hoorn – Medenblik (SHM) and two at the Museum Buurt Spoorweg Haaksbergen (MBS).