The white Rolls-Royce Phantom I Cabriolet DHC Aluminium by Wilkinson from 1926. Wilkinson company was founded in 1904 by Isaac Wilkinson and his family as repairers and manufacturers of horse-drawn vehicles, the company developed over the years to become coachbuilders to the motor trade as it emerged in the 1920’s.
Compare with Rolls-Royce Phantom II Cabriolet DHC Aluminium by Wilkinson from 1930