1956 Norton ES2, 499 cc, project. Registration number UAT 973. Frame number 58682 (see text). Engine number L4 66937. Introduced at the 1927 Motor Cycle Show, the ES2 sports roadster used the Model 18’s overhead-valve engine in the cradle frame of the overhead-camshaft CS1, and from then onwards the ‘ES2’ designation was always applied to Norton’s top-of-the-range overhead-valve single. The ES2 was built in several versions during a production run lasting until 1963, though the engine dimensions of 79x100mm bore/stroke - first adopted by James Landsdowne Norton in 1911 - remained unchanged to the end. Post-war developments included the adoption of an alloy cylinder head (1955), alternator (1959) and the slim-line version of the Featherbed frame introduced on the single-cylinder range for 1961. Production of all of Norton’s traditional singles ended in 1963, though the ‘ES2’ designation was later applied to a re-badged Matchless. This project, found at the back of Hull racer Mike Browns shed was registered to Gordon Walmsley, followed by three others before Keith Bass in 1970, then Gary Wilkinson, all of Hull, in 1971 before Mike bought it. Please note there is only a crank, rod and piston in the engine. Sold with the V5C and RF60, please note these documents state the frame to be L4 66937.