Advertised on the PreWarCar website (thanks Martin!): "Norton ex-works racing machine, 1933, engine updated by Arthur Carroll and Joe Craig (Norton Racing Development), bronze head, twin coiled springs, no filter bolt, 14 mm plug, change of roller bearings. Raced at the Island of Man TT by Tim Hunt or Jimmy Simpson. Older restoration and comes together with rare (hard to find) spare parts"
JdK: Very interesting if the seller can provide some proof of the bike's history. The Norton would have been modified quite a bit after it's racing career (which is not unusual) and parts like the magdyno, gearbox and footrests fitted to the engine plates are more at home on a WD16H.