Marc CHAGALL, Ida Chagall’s wedding service: cup 6: Two Heads (Service de mariage d’Ida Chagall : tasse 6 : Deux têtes), 1951, pink ochre clay, white enamel, cobalt blue decoration, 4 in. (10.1 cm), Private collection © Alain Leprince/Roubaix, musée La Piscine/ADAGP, Paris, 2024