Etched brass kit. LSWR Dwg 1446 SR Diag 124 Between 1906 and 1910 the LSWR built 37 standard sets for semi-fast main line and cross country services. They were formed — Brake Third (4C24)/ 2nd/3rd Composite 4C25) / 1st/3rd Composite (4C26)/ Brake Third (4C24). From 1935 the 2nd/3rd compos, by now thirds, were removed from the sets and were used as loose vehicles. The three car sets remained in service until 1957 Many brake thirds went into to engineers service in the 1950's and one of these is preserved on the Bluebell Railway.