DRS Mk2F Standard Open 5919HOR R40331nby DRS, Mk2F Standard Open, 5919 Era 11 2022 Catalogue The Mk2 Coach was introduced to the British Railway in 1964, designed to be stronger and more resistant to corrosion than their predecessors yet also reducing maintenance costs. A revised painting method coincided with a switch from BR maroon and Southern Region dark green to a blue and grey livery. 1876 Mk2 Coaches were produced by BREL at Derby Litchurch Lane Works between 1963 and