Of a very similar external appearance to the Isle of Man Railway's later "Big F" coaches built by Metropolitan Carriage & Wagon Co., this coach was purchased by the Manx Northern Railway to bolster its fleet of six-wheelers and re-allocated with an I.M.R. fleet number upon amalgamation in 1905.  Together with F.38, they were the first coaches on the island to be electrically lit from delivery.  It saw regular service, much moreso than the other M.N.R. (six-wheeled) coaches and was used on through trains between St. John's and Douglas by arrangement with the railway company.  The major difference (identifiable in photographs) is that the framework steel is "inside out" compared to the Metropolitan-built stock, insofar as the "U" section plating is the opposite way round, creating a recess directly underneath the wooden coach frame solebar.  It has a guards' compartment in the Ramsey end with end lookout windows, similar to that carried by F.45, the only difference being that rather than the rectangular ones on her Metropolitan-built counterpart, the top of the frame follows the curve of the roofline, distinguishing her from F.38 on photographs.  Another distinguishing feature is the slightly wider panelling between the compartments than the Metropolitan-built coaches.  The first class compartments on this vehicle were lavishly upholstered with cushioned panelling and curtains, similar to the Railway Company's first class but a notch up in quality and their ride made them popular with passengers.  Stored latterly at St. John's in the carriage shed, this was one of a number of vehciles (including sister F.38) to be sold to Peter Rampton in 1975 when it left the island for private storage.  It now forms part of the assets of the Phyllis Rampton Charitable trust and remains unavailable for viewing; it is also understood that is has had some work carried out to the framework with a view to re-gauging it for use on a mainland railway, though this has not happened to date.