This Norton frame and engine left the factory as a Model 30 on 11 April 1933 to Dunn Jameson; it's currently being restored in Canada. The frame has lugs for rear mounted footrests even though those fitted at present are in orthodox place. The gearbox is the correct type Sturmey Archer for 1933. It probably should have a BTH magneto. The petrol tank is earlier, 1928-1929 CS1 or ES2. The front forks could be from a somewhat later model.