1931 poster by an unknown artist Londres - routes maritimes les plus courtes (London - the shortest sea routes). The routes shown are the usual suspects (Calais-Dover, Boulogne-Folkestone, Dieppe-Newhaven and Ostende-Dover) plus the night service Le Havre-Southampton.
Interested parties are directed to the Southern Railway offices in rue Auber, Paris (to be expected), rue de la Régence, Brussels (natch) and place de la gare, Bale, which I can only assume is Basel in Switzerland, which is positively bizarre.
The image is, I suspect, a symbolic mix of trooping the colour and the state opening of parliament. I can understand the US and French flags, and those of Commonwealth (or Empire) nations, but Japan?
Keywords: Southern Railway; railway poster; affiche; plakat; advert; Londres; London; routes maritimes; sea routes; England; Calais; Douvres; Dover; Boulogne; Folkestone; Dieppe; Newhaven; Ostende; Le Havre; Southampton; Paris; Brussels; Bruxelles; Brussel; Bale; Basel; Switzerland; Suisse; Schweiz; France; Belgium; Belgie; Belgique; Baynard Press; 1931, 1930s