The Silver Cloud was launched in 1955. In 1959, the second generation slightly changed externally but received a new 6.2-litre V8 engine that replaced the 4.9-litre straight-6-cylinder. Of the 2,716 cars produced, 299 were long wheelbases. This 4-door convertible, based on the latter version, was made by the H.J. Mulliner department. Six models are supposed to have been produced.