BR 21T COAL21/MDO - Grey pre TOPS- Pack CBritish Railways 21 Ton Coal 21 MDO Wagons Three wagon multi pack Containing three wagons, numbered: B201059 B201110 B201473 Grey, Pre TOPS livery 1 107 pattern Spindle Buffers Oil Axle boxes Introduced in 1950 1,500 wagons built to this pattern Two doors on either side of body and another at one end only for end tipping Remained in service until 1988 Ran in block rakes, and mixed with other coal wagons such as 16t minerals (MCO), 21t hoppers (HTO),