The BR 21-ton mineral wagon introduced by British Railways around 1950–1960, had a long service life hauling minerals, coal, ore, and industrial materials—continuing into the late 1980s–early 1990s.
This authentic, highly detailed Hornby TT:120 model replicates these spacious wagons, with TOPs-era bauxite (red/brown) livery, white markings and running number ‘B313504’.