A unique 1960 Daimler SP250 AHC retractable hardtop coupe prototype is selling at Bonhams.
The lot will be one of the headline lots of the Goodwood Revival sale on September 10.
This unique car features a prototype retractable roof system
Antony H Croucher Precision & Prototype Engineering (AHC) was the original owner of the car, having bought it in 1964 to test its new retractable roof system.
It took well over 3,000 man hours to install. The boot was also enlarged and the car adapted into a four seater - giving it an eccentric profile.
The consignor is the son of Anthony H Croucher.
Together with his brother, the consignor spent several months getting the car up to standard before putting it on display at Wiltshire's Atwell-Wilson Motor Museum.
Bonhams comments: "AHC's Daimler got good press coverage, copies of which the vendor still has, as well as the working drawings.
"The system was intended for use on large luxury cars such as the Jaguar Mark X, Vauxhall Velox, etc but nothing became of it.
"Eventually, after lengthy negations with his father, the vendor bought the Daimler from him in 1969."
The car is expected to bring in around £50,000-70,000 ($65,629-91,881).
The sale will also feature an Aston Martin "Red Dragon", which is valued at up to £2m (2.6m).
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