Ebauches S.A. was born out of the merger of three major blank manufacturers: Ad. Michel S.A. in Granges, founded in 1898 by Adolphe Michel and Jean Schwarzentrub, A. Schild S.A. also in Granges, founded in 1896 by Adolf Schild-Hugi, and the Fabrique d'Horlogerie de Fontainemelon, founded in 1793 by Isaac and David Benguerel in association with Julien and François Humbert-Droz. Between them, these three factories produce over 75% of Swiss ébauches. Schild, for example, employs over 2,100 people. What's special about Ebauches S.A. is its last initials: S.A. It's not an association, not a trade union, no, it's a private limited company. And with the help of the banks, it's rich. Very rich. So when she invites guests to her table, it's not to discuss the economy. No, it's to talk redemption. And one by one, the small ébauches manufacturers gave in. In 1927, nine manufacturers were sold off, including Hora, Sonceboz and Charles Hahn, the maker of Landeron chronograph movements. In 1928, ten more, including Felsa, Vénus, Racine, Bovet and Optima. In 1929, eight more, including Urania and Postala. Strengthened by this concentration, on December 1, 1928 the manufacturers signed the Windfall Agreement in Berne, drastically regulating export rights and obligations.