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 electrics (1959) and the slim-line version of the race-developed Featherbed frame, which was 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 matching-numbers Norton ES2 comes with its original old-style RF60 logbook showing that it was first registered by Eddie Stephens Motors in Carmarthen. Offered for restoration, the machine appears substantially complete, albeit finished in a rather unusual colour scheme for a Norton. It should be noted that the registration does not appear on the HPI database, having lapsed.