Ruth Duckworth, “Untitled Wall Piece” 1975, porcelain, 13.5 x 15 x 3.5″ Margaret Pennington Collection. photo: John Polak

Ruth Duckworth, "Untitled Wall Piece" 1975, porcelain, 13.5 x 15 x 3.5" Margaret Pennington Collection. photo: John Polak