A rare 1969 Aston Martin DB6 Mk 1 Volante Vantage is set to sell for more than £500,000 when it goes under the hammer this month.

One of just 29 ever made, it is believed to be the final such Volante Vantage built.

Owned by the same person since 1981, the car is used rarely and only in the dry. It carries an estimated price of £500,000 - £750,000.

It is being sold by Barons at Sandown Park on July 28.

A Barons spokesman said: “This beautiful and unspoilt machine is in extremely original condition and bears the inimitable patina of age. Even the power hood is thought to be the original one.

“This model rarely comes to market and particularly not in such original condition.

“Not surprisingly, the car has already caused something of a stir in Aston Martin circles, with Barons receiving enquiries and many early bidding registrations from potential buyers worldwide.”

Other notable lots consigned to the sale include an Offord-bodied 1934 Rolls-Royce 20/25 Coupe de Ville (£35,000 - £50,000) and a rare 1929 Renault 6NN Torpedo (£9,000 - £12,000).

The sale also includes one of the original ‘hot hatches’ – a 1987 Ford Escort RS Turbo.

Apart from the upgraded Scorpion stainless steel exhaust, the car is believed to be 100 per cent original and even has the stereo and cassette holder it was equipped with in the factory. It is estimated to fetch between £5,000 and £7,000.

Barons’ director Tony Cavell said, “We are very excited to have the remarkable Aston Martin consigned to the sale and the reaction has already been outstanding, with a significant amount of interest shown in the car.

“It comes after our successful June sale, where some 75 per cent of the lots on offer found new homes, including the XK120 restoration project, with strong prices achieved across the board.

“And, of course, in April we achieved the highest price we have achieved to date for a car, when the extremely rare 1954 Bentley R-Type Continental Fastback restoration project sold for over £739,000.”