Pivoting Construction One. Elastic and perspex. 80cm x 80 cm. 1978. Reading University Picture Loan Scheme, England, U.K. 

Interpenetrating planes-2. Acrylic on canvas.

101cm x 122 cm. 1978.

Private Collection, England, U.K. 

Pivoting planes. Acrylic on canvas.

101cm x 122 cm. 1978.

Private Collection, England, U.K. 

Interpenetrating planes-1. Acrylic on canvas.

101cm x 122 cm. 1978.

Private Collection, England, U.K.