LMS Third Open (TO) 27270 was built in 1946 at Wolverton to diagram number 1999 lot number 1402. The LMS Open Third carriage seats 56 passengers at tables either side of a central aisle.
Three LMS Third Opens, 27218, 27220 and 27270, were all rescued intact from Didcot Yard in 1968. 27270 is normally used in Set L, having received a major rebuild in 1997/8. It is owned by SVR(H).
Sources
Railway Heritage Register Carriage Survey
SVR Stock Book Ninth Edition