An extremely rare Velocette Thruxton dating from 1966 is to go to auction later this month.
The Thruxton, which enthusiasts have dubbed the 'last great British single', was a true factory-built café racer, boasting a 500cc air-cooled single-cylinder engine that put out 41hp at the crankshaft.
According to period testing, an un-race tuned model could reach a top speed of 110mph – 10mph faster than its predecessor, the 500cc 34hp Venom.
Despite being built in road-going specification, the bike was aimed at the racing fraternity, and saw its first success in the 1965 Thruxton 500 – a 500-mile endurance road race.
Two years later a pair of Thruxtons finished first and second in the inaugural running of the Production TT at the Isle of Man.
Only 1,108 units were built over six years of production before the British manufacturer went out of business in 1971.
The exclusivity of this model has not been lost on auction house H&H Classics, which has estimated the bike to sell for between £10,000 and £12,000, despite its need for re-commissioning.
He commented: "It is super rare to find a bike in this condition, which is not even on the Velocette Owners Club register! This motorcycle is a very real and rare discovery."
The model, registration no. MPG502D, is currently on display in Birmingham's National Motorcycle Museum, and will go to auction at Donnington Park on July 28.
Despite its high estimate, there is no reserve price on the lot.