Manufactured in The Quomp, Ringwood, Hampshire by G.H. Jones (designer), R.W. Mason and C.S. Barrow between 1933 and 1935.
The J.M.B. was a three-wheeled saloon powered by a JAP 500cc OHV V-twin mounted horizontally at the rear of machine, which had a frame made from ash. Available as a 2 or 4 seater, initially they had fabric bodies, switching to sheet metal in 1935. Some 250 were built in total.
Sources: austinsevenfriends.co.uk, et al
