Built by the LNWR prior to the grouping for the carriage of motor cars and carts, this vehicle latterly saw service as a 'cell truck', being used for the carrying of batteries to and from British Rail works, and is hence floored with lead.

It would probably have been finished in "quick brown", a colour very similar to the carriage lake, lined in yellow with yellow letters and numbers on the doors.  The famous LNWR two-tone livery was not applied to these vehicles after about 1900.  On about 1916 the LNWR stopped applying lining to all its non-passenger coaching stock, and letters and numbers changed to white.  This is the livery that the vehicle has been restored to at present, though it is intended to restore it to full lined out livery into the not too distant future.

When the LMS took the vehicle over in 1923 it was renumbered.  It was then fitted with standard LMS axleboxes and builders plates.  Interestingly, LMS records show the vehicles as being built in 1912, not 1911, and the plate on the solebar reflects this.

The wagon was converted to a cell truck, for carrying coach batteries in 1954.  It was probably then when it was given the number CDM395080.  It will be noted that end doors are fitted for the loading of road vehicles.  It arrived at Quainton on 21st January 1974, and has gone through several ownerships since its arrival.  The vehicle has six-wheels and is 30 foot long.