BR built 1500 of these wagons in 1950. In 1971 a further 2600 similar wagons were built with new bodies on redundant 12 foot chassis. It is a simple plastic kit fitting on the supplied Peco Parkside 12ft wheelbase chassis. It is a reasonably simple kit to build. They often ran with other designs of 2-door mineral wagons.
The decals contain markings for early BR, ‘COAL 21’, and TOPs – enough for three wagons in any of them. The K suffix to the number was added in 1966 but fairly quickly dropped.