This carriage represents the very best of what the Scottish railway companies were providing at the end of their independent existence. It has eight third class compartments seating 64 people, and two lavatories, and ran on main line services such as those from Glasgow to Stirling, or Glasgow to Edinburgh via Carstairs.
No.1375 has been repainted in the CR livery of dark maroon and white, lined and lettered in gold, but its interior has never been altered or rebuilt and shows exactly what main line railway travel was like in Scotland in the 1920s and 1930s. After restoration by BR in 1958 it was withdrawn from service in 1964, and sold to the Bluebell Railway in Sussex, from whom it was bought by the SRPS.