In the 60's the Dutch Railways (Nederlandse Spoorwegen) ordered a small number of 2 axle wagons for large and/or heavy loads from Krupp in Essen (D). Several are preserved. (http://www.nmld.nl/nl/object/1454 http://www.nmld.nl/nl/object/2321)

The drawing published by "Sleutel Spoor"(http://sleutelspoor.nl/projecten/intervervoer/) was very helpful to make this model.

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