In 1925 Chenard et Walcker was the fourth largest car maker in France. In 1927 the company entered into a tripartite "consortium" (collaboration) with Delahaye and Rosengart, sharing designs and components. Unic were also offered a place in the consortium but declined the offer. The "entente" was advertised in 1929 with the slogan "L'Union fait la force" The arrangement lasted almost four years, until 1931, when it would be Chenard et Walcker that broke with the other partners. In a letter dated 13 June 1930 to Delahaye, the company's president stated that it seemed quite impossible to continue the collaboration as it was then working, and the collaboration was formally dissolved at the end of September 1931, the fifteen intervening months having been used by the partners to configure their separate model ranges, although some "run-out" models from the period of the collaboration continued to appear after 1931.