This 1964 Aston Martin DB5 Sports Saloon last changed hands in 1972 for £1,500.
The blue DB5 was last put through an MoT test in 1977. After that it was parked in the garage of its owner, David Ettridge, where it has remained for more than 30 years.
Mr Ettridge was a member of the Aston Martin Owners Club. The £1,500 he paid for the car in 1972 equates to about £14,000 in today's money
The car has covered just 47,226 miles from new and is described as being in 'original condition'
James Knight, Group Motoring Director at Bonhams, said: 'The Bonhams Motor Car department has handled the sale of numerous "barn-find" Aston Martins over the past 15 years, but none of them have been in as good condition as this DB5'
'We very much doubt we will offer another DB5 like CNH 20 again.' added Mr Knight
Although the car hadn't been started for more than 30 years, after some careful preparation the engine fired into life.
The DB5 was sold at Bonhams auction in May 2013 as part of a deceased estate, and was expected to fetch between £150,000-£200,000. Well it went above those expectations and was sold for £320,700 (€386,385).