The Varivol II has a variable span wing that could be extended in flight for a lower speed on landing. The aircraft was intended to be raced in the Coupe Deutsch de la Meurthe. It was built during WWII and partly destroyed at the Liberation. However, in 1946 it was succesfully tested in the Chalais-Meudon wind tunnel. But it never flew and never had a registration. Next it was forgotten in the back of a barn, until found in Jul-2000 and brought to the Musée Régional de l'Air at Angers, from 2013 renamed Espace Air Passion.