Ball gown in black silk velvet

Black silk velvet ball gown; below-knee center front, tapering to floor-length center back; wide off-the-shoulder elasticized balloon-puff cap sleeves, extending from wide ruched band atop fitted, boned bodice; natural waist; full skirt; proper left zipper closure; black silk chiffon bodice lining, black silk taffeta skirt lining. Label: Balenciaga / 10 Avenue George V Paris / #40013. Made for and worn by Mary French Rockeller (Mrs. Laurance S. Rockefeller.)