BR 4690 Tourist Standard Open
From SVR Wiki
BRBritish Rail or British Railways Mk 1 Tourist Second Open (TSO) No 4690 was built in 1957 at York to diagram number 93 lot number 30375.
It was preserved in 1982, since when it has been converted to a fully-equipped disabled access coach. It is seen photographed in March 2015 as part of the BRBritish Rail or British Railways Maroon set.
Sources
Railway Heritage Register Carriage Survey
Links
4690 on vintagecarriagestrust.org