1086 is one of four 1938-built Collett Corridor Third (TK) coaches on the SVR, along with 1087, 1116 and 1146. They were built at Swindon to diagram number C77 as lot number 1593.
After passenger service, 1086 was later numbered 079154 and 99234. The former number signified Departmental Coaching stock within the Western Region that did not normally move or had its movements confined to a particular depot or yard. The latter number signifying hauled non-passenger carrying use; all four of the SVR TKs formed part of the Swindon GWR test train which was used for load testing of diesel locomotives.
The entire 9-coach test train was sold into preservation in 1969, with the four coaches being bought for the SVR. All four Full Thirds were restored between 1970 and 1973, and saw service on SVR excursions on the main line as well as on the SVR itself.
As of July 2015, 1087 is in service and is normally used in set GW2. It is finished in GWR 1934-42 livery featuring the ‘shirt-button’ roundel, and is owned by The Great Western (SVR) Association.
Sources
Railway Heritage Register Carriage Survey
SVR Stock Book Ninth Edition