R40464 BR Maunsell Brake Composite class S6673 Set 179When the Southern Railway was formed in 1923, it continued to build coach designs inherited from the main three constituent companies. Richard Maunsell introduced the SRs first standard coaches, building over 1,200 of them. These were formed into 139 sets, as it was the SRs practice to keep coaches together for long periods of time, with a set number at each end. These replica coach models are the later 59ft type built from 1934 with flush sides,