Confirm; a 225cc Model LW (Light Weight), also known as a Junior and a 'Baby', as it was the smallest in the Triumph range. Very popular with young folk, who could ride at age 14 at that time. It has the optional legshields and footboards. Cost 66 pounds in January 1920, plus another 30 shillings for the legshields, but as that was an inflationary year it was up to 72 pounds by March. The registration makes it Somerset, early 1920.
Peter.