HARRY BERTOIA (1915 - 1978) Large Sonambient sculpture, Pennsylvania, 1976 Beryllium copper, bronze Unmarked 38 1/2" x 12" sq. Provenance: Colletion of Al and Jayne Winegardner 49 rods. Slight irregularity in height to grid pattern at top (in making of). No bends. Light to moderate oxidation evenly throughout.