A 1929 Rolls-Royce 40/50hp Phantom II Weymann Sports Saloon, reputedly the last model that the marque’s co-founder Henry Royce designed himself, is one of the highlights of the Collectors’ Motor Cars and Automobilia sale at in Oxford, UK on March 5th. The rare vehicle is expected to fetch up to $325,000. The now legendary Phantom II chassis provided a platform …