Georges-Philippe and Nathalie Vallois Gallery support the New Realism, a movement that was founded in October 1960 by a joint declaration signed by Yves Klein, Arman, François Dufrene, Raymond Hains, Martial Raysse, Pierre Restany, Daniel Spoerri, Jean Tinguely, Jacques de la Villeglé. In 1961 César, Mimmo Rotella, then Niki de Saint Phalle and Gérard Deschamps join the group.