This game about the Tour de L'Ouest was offered by Aspro aspirins. They offered a similar game (together with L'Équipe) for the 1961 Tour de France.

 

The board measures ca. 54.5 x 34 cm

The Tour de l'Ouest was organized from 1931 to 1939 and  from 1946 to 1959. It was not a really important race, though among its winners there are some important riders like  Tour de France winners Romain Maes and Louison Bobet, or three-times world champion Rik van Steenbergen.

 

It is a game of goose, obviously.

ASPRO full colour ad on the back of the game

Thanks to Didier Maria for tipping me on this one.