1952 White Cylinders on Black
Size: 15 × 30 cm
1968 White Cylinders on Black
Size: 30 × 30 cm
1968 Cylinders
Size: 20 × 20 cm
1969 White Cylinders on Orange
Size: 42 × 42 cm
1969 White Cylinders on Blue
Size: 30 × 30 cm
