• The height of soft-top luxury • One owner from new • Stored since acquisition • Circa 15,500km on the odometer An historic model in Rolls-Royce's continuing story, the Dawn convertible was launched at the 2015 Frankfurt Motor Show, reviving, at least in part, a great name from Rolls-Royce's past that had always been synonymous with unrestrained luxury.

Although based on the Wraith fixed-head coupé, the Dawn had undergone extensive re-engineering to achieve its maker's aims of building 'the quietest open-top car ever made' and 'the most rigid four-seater convertible available today'.

Some boot space was sacrificed to accommodate the folded-down convertible hood, leaving the cabin space undiminished, with the fold-down time an impressive 20 seconds.

At almost 5.3m in length, the Dawn is a very large motor car; with a basic price of around £250,000, it was, amazingly, considered an 'entry level' Rolls-Royce.

The Wraith's 6.6-litre twin-turbocharged V12 was retained for the Dawn, its...