Honda first offered a 400cc twin in 1977 alongside the established four-cylinder CB400F. The new CB400T was soon updated to 'N' specification, featuring Honda's 'Euro' styling and Comstar wheels, while alongside the conventional model Honda offered the automatic-transmission CB400A, one of the earliest examples of this form of transmission applied to a mass-produced motorcycle. This CB400A previously belonged to motorcycle journalist and long-time enthusiast for the model, the late Brian Thompson, who was its third owner. Brian recounted his lengthy experience of Hondamatics in an article for Motorcycle Sport in 1987 - 'Best Years of My Life' - a copy of which is in the history file. 'MUR 384V' is pictured in the article and was bought from Brian by the vendor. Currently MoT'd, this rare Honda is offered with the aforementioned copy article and a V5C document.