Originally, the car with the ship-like Boattail rear was delivered to a Captain Miller on behalf of Earl Howe, founder of the British Racing Drivers' Club. The somewhat unusual appearance of the 680S reflects its personal racing colors light blue and silver (color scheme, which is also known as 'Curzon blue'. The most striking feature are probably the torpedo-shaped running boards. However, they did not serve to martially give way to this elegant automobile the thirties, but were intended for tools and as additional storage space.

Barker & Co. was a British coachbuilder, based in London. As well as Rolls-Royce and Bentley, Barker also constructed bodywork on chassis by other manufacturers including Daimler, Napier, Packard, Cadillac, Duesenberg, and Mercedes-Benz.