Triumph motorcycles of the early 1930s represent a watershed between the ultra-successful Model P 'flat tanker' and its derivatives, and the new range of models that would be designed by the great Val Page following his arrival in 1932 and further developed by Edward Turner. Typical of these was the 350cc sidevalve WL, a new introduction for 1931 that featured the then fashionable inclined ('sloper') engine and dry sump lubrication with oil tank in the front of the crankcase, an arrangement first seen on the totally revised NSD model of 1930. Enclosure of the crankcase and gearbox was another popular trend at this time and was offered on various Triumph models including the WL. The latter though, was destined for a relatively short life and was not listed for 1933, thus making it one of the rarer Triumph models of the early 1930s.

Last taxed for the road in 1977, this apparently complete and substantially original example was acquired by the current vendor's father in June 1978 having previously belonged to Mr Brian Ford of Timsbury, Bath. The machine is offered with DVLA correspondence, expired MoT (1978) and old/current Swansea V5/V5C registration documents.