The Railway Museum (Dutch: Het Spoorwegmuseum) in Utrecht is the Dutch National Railway Museum.
It was established in 1927 and since 1954 has been housed in the former Maliebaan station. The museum currently owns a large and varied collection of rolling stock.

Open goods wagon NS 59221 GTMK preserved at the Het Spoorwegmuseum / Railway Museum in Utecht Maliebaan former Station. July 15th, 2022.
Thousands of 20-tonne wooden open wagons of the GTM type have been built, mainly intended for the transport of coal from the mines in Limburg to customers throughout the Netherlands and abroad. They were built between 1912 and 1930. Car 59221 belonged to the subseries 58501 - 59360, of which the 58861 - 59360 were built by Westwaggon in Cologne. From 1938, steel cars came into vogue.
For decades, long coal trains were the face of the railroads from the south to the west and north.
With the disappearance of coal as domestic fuel, the long freight trains also disappeared and all but one of the wooden wagons were demolished in the 1960s. This car, then downgraded to a service car with the number NS 161190 for internal use, was provided with new woodwork by the fa Jansen in Bergen op Zoom in 1990 and renumbered into NS 59221 with the not entirely correct type designation G.T.M.K.
At the beginning of 2016, an overhaul of the woodwork was started, during which the planks were properly secured, the car was repainted and the correct inscriptions were applied, i.e. with the type designation GTMK.
G = open wagon
T = tipable (hinged headboards made it possible for the contents of the wagon to be dumped into ships by tipping longitudinally)
M = load capacity 20 tons or more
K = fitted with Kunze-Knorr freight train brake

Photo by Guido Allieri (guido@allieri.com)