As with the similar No.5, the end compartments are a narrow 4’ 9” wide, and the carriage differed from the remainder of the series, being braked and arranged as Guard / 3rd 3rd / 3rd 3rd / 3rd, there being full-height partitions for a pair of compartments and between Guard and 3rd Class; whereas the similar No.5 was reconfigured a number of times over the years, No.6 remained as supplied.  Having spent some time unusually under cover at St. John’s after withdrawal, this carriage was selected for preservation and bought in 1975 by Supporters’ Association member Julian Edwards, residing in a purpose-built shed in the north of the island while a long-term restoration was undertaken.   For the next four decades progress was made and by 2021 the largely complete vehicle returned to the railway for trails and fitting of through-piping for vacuum brakes.  By the end of 2022 it had successfully travelled the entire length of the south line, possibly for the first time ever in its career, and took up residence in the railway museum in 2023, venturing out occasionally for special events when, for a premium, members of the public may travel in it.  The standard of restoration is exemplary and can be viewed at close quarters in the museum, as can the original rather sparse third class interiors retaining their original horsehair seats.