The Crucifixion, ca. 1315, Tempera on panel, Left wing, overall, with engaged frame, 15 1/8 x 10 5/8 in. (38. 4 x 27 cm) ; right wing, overall, with engaged frame, 15 x 10 5/8 in. (38. 1 x 27 cm), Paintings, Segna di Buonaventura (Italian, active Siena by 1298?died 1326/31), This panel portraying the Madonna and Child formed a diptych (two panels hinged together so they could open and close) and would have been used for private devotion