I wonder whether anyone watches 1950s / early 1960s films on the 'Talking Pictures' channel? This specialises in British B and W films and newsreels of the period and is a must for anyone interested in the cars and road conditions of the time even if the films may be regarded as suboptimal.
Earlier this week 'Circle of Danger' (1951) was aired featuring Ray Milland and Patricia Roc but the star was the late 1920 Mercedes (two seater SS I think) seen driving around London and Scotland towards the end of the film. Would have been high on a trad owners wish-list I think.