Death of a cyclist

A few nights ago I watched the legendary classic Spanish film "Death of a cyclist". The movie was directed by Juan Antonio Bardem, the uncle of Javier Bardem, of "No Country for Old Men" fame. Check out the handsome bikes of those policemen! The movie is from 1955 but that color scheme was not used by Royal Enfield in 1953, 54 or 55. So it is likely to be a 1952 or 51 and the color scheme was available in the Bullet 350 or in the 500 Twin. If it is older, the scheme was available in many models. I'd vote for the twin. A policeman needed all that power to chase the bad guys. Although in this particular scene he's confessing he has no clue who ran over the cyclist...