Medium: serigraph (after the painting). Printed in 1968 and published by the (op)art galerie of Esslingen, Germany for a rare portfolio. Size: 9 1/2 x 7 7/8 inches (240 x 200 mm). Not signed.

Medium: serigraph (after the painting). Printed in 1968 and published by the (op)art galerie of Esslingen, Germany for a rare portfolio. Size: 9 1/2 x 7 7/8 inches (240 x 200 mm). Not signed.

Condition: there is some foxing to the paper.

Medium: serigraph (after the painting). Printed in 1968 and published by the (op)art galerie of Esslingen, Germany for a rare portfolio. Size: 9 1/2 x 7 7/8 inches (240 x 200 mm). Not signed.

Condition: there are a few small spots of foxing to the paper.

Medium: serigraph (after the painting). Printed in 1968 and published by the (op)art galerie of Esslingen, Germany for a rare portfolio. Size: 9 1/2 x 7 7/8 inches (240 x 200 mm). Not signed.

Condition: there is some creasing to the paper near the bottom right.

Medium: serigraph (after the painting). Printed in 1968 and published by the (op)art galerie of Esslingen, Germany for a rare portfolio. Size: 9 1/2 x 7 7/8 inches (240 x 200 mm). Not signed.

Medium: serigraph (after the painting). Printed in 1968 and published by the (op)art galerie of Esslingen, Germany for a rare portfolio. Size: 9 1/2 x 7 7/8 inches (240 x 200 mm). Not signed.

Medium: serigraph (after the painting). Printed in 1968 and published by the (op)art galerie of Esslingen, Germany for a rare portfolio. Size: 9 1/2 x 7 7/8 inches (240 x 200 mm). Not signed.

Medium: serigraph (after the painting). Printed in 1968 and published by the (op)art galerie of Esslingen, Germany for a rare portfolio. Size: 9 1/2 x 7 7/8 inches (240 x 200 mm). Not signed.

Medium: offset lithograph (after Vasarely). Printed in 1972 in Neuchatel, Switzerland on thick, high-gloss paper and published by Editions du Griffon for the "Vasarely Progressions 1" portfolio. Size: 16 x 16 inches (410 x 410 mm). Not signed.

Medium: offset lithograph (after Vasarely). Printed in 1972 in Neuchatel, Switzerland on thick, high-gloss paper and published by Editions du Griffon for the "Vasarely Progressions 1" portfolio. Size: 16 x 16 inches (410 x 410 mm). Not signed.

Medium: offset lithograph (after Vasarely). Printed in 1972 in Neuchatel, Switzerland on thick, high-gloss paper and published by Editions du Griffon for the "Vasarely Progressions 1" portfolio. Size: 16 x 16 inches (410 x 410 mm). Not signed.

Medium: offset lithograph (after Vasarely). Printed in 1972 in Neuchatel, Switzerland on thick, high-gloss paper and published by Editions du Griffon for the "Vasarely Progressions 1" portfolio. Size: 16 x 16 inches (410 x 410 mm). Not signed.

Medium: offset lithograph (after Vasarely). Printed in 1972 in Neuchatel, Switzerland on thick, high-gloss paper and published by Editions du Griffon for the "Vasarely Progressions 1" portfolio. Size: 16 x 16 inches (410 x 410 mm). Not signed.

Medium: offset lithograph (after Vasarely). Printed in 1972 in Neuchatel, Switzerland on thick, high-gloss paper and published by Editions du Griffon for the "Vasarely Progressions 1" portfolio. Size: 16 x 16 inches (410 x 410 mm). Not signed.

Medium: silkscreen / serigraph (after the painting). Printed in 1967 by Domberger for the rare Formen der Farbe portfolio, published by Kunstverein Stuttgart of West Germany. Size: 10 1/2 x 10 1/2 inches (270 x 270 mm). Not signed.

Medium: screenprint in black on a transparent plastic sheet (after the drawing). This fascinating Vasarely composition was printed in Switzerland in 1970 on a flexible, clear mylar sheet. Size: 10 1/2 x 10 1/2 inches (267 x 267 mm). Not signed.

Condition: the plastic has become somewhat curled and clouded with age. Photographed against a white background.

Medium: screenprint in black on a transparent plastic sheet (after the drawing). This fascinating Vasarely composition was printed in Switzerland in 1970 on a flexible, clear mylar sheet. Size: 10 1/2 x 10 1/2 inches (267 x 267 mm). Not signed.

Condition: the plastic has become somewhat curled and clouded with age. Photographed against a white background.

Medium: screenprint in black on a transparent plastic sheet (after the drawing). This fascinating Vasarely composition was printed in Switzerland in 1970 on a flexible, clear mylar sheet. Size: 10 1/2 x 10 1/2 inches (267 x 267 mm). Not signed.

Condition: the plastic has become somewhat curled and clouded with age. Photographed against a white background.

Medium: screenprint in black on a transparent plastic sheet (after the drawing). This fascinating Vasarely composition was printed in Switzerland in 1970 on a flexible, clear mylar sheet. Size: 10 1/2 x 10 1/2 inches (267 x 267 mm). Not signed.

Condition: the plastic has become somewhat curled and clouded with age. Photographed against a white background.

Medium: screenprint in black on a transparent plastic sheet (after the drawing). This fascinating Vasarely composition was printed in Switzerland in 1970 on a flexible, clear mylar sheet. Size: 10 1/2 x 10 1/2 inches (267 x 267 mm). Not signed.

Condition: the plastic has become somewhat curled and clouded with age. Photographed against a white background.

Medium: screenprint (after the drawing). Printed in 1963 on a special semi-transparent paper in an edition of 450 for "Naissances" and published by Galerie Der Spiegel. Size: 11 3/4 x 8 1/4 inches (300 x 210 mm). Not signed.

Condition: there is some age-toning to the paper.

Medium: screenprint (after the drawing). Printed in 1963 on a special semi-transparent paper in an edition of 450 for "Naissances" and published by Galerie Der Spiegel. Size: 11 3/4 x 8 1/4 inches (300 x 210 mm). Not signed.

Medium: screenprint (after the drawing). Printed in 1963 on a special semi-transparent paper in an edition of 450 for "Naissances" and published by Galerie Der Spiegel. Size: 11 3/4 x 8 1/4 inches (300 x 210 mm). Not signed.

Condition: there is some age-toning to the paper.

Medium: screenprint (after the drawing). Printed in 1963 on a special semi-transparent paper in an edition of 450 for "Naissances" and published by Galerie Der Spiegel. Size: 11 3/4 x 8 1/4 inches (300 x 210 mm). Not signed.

Medium: screenprint (after the drawing). Printed in 1963 on a special semi-transparent paper in an edition of 450 for "Naissances" and published by Galerie Der Spiegel. Size: 11 3/4 x 8 1/4 inches (300 x 210 mm). Not signed.

Condition: there is some age-toning to the paper.

Medium: screenprint (after the drawing). Printed in 1963 on a special semi-transparent paper in an edition of 450 for "Naissances" and published by Galerie Der Spiegel. Size: 11 3/4 x 8 1/4 inches (300 x 210 mm). Not signed.

Condition: there is some age-toning to the paper.

Medium: screenprint (after the drawing). Printed in 1963 on a special semi-transparent paper in an edition of 450 for "Naissances" and published by Galerie Der Spiegel. Size: 11 3/4 x 8 1/4 inches (300 x 210 mm). Not signed.

Condition: there is some age-toning to the paper.

Medium: screenprint (after the drawing). Printed in 1963 on a special semi-transparent paper in an edition of 450 for "Naissances" and published by Galerie Der Spiegel. Size: 11 3/4 x 8 1/4 inches (300 x 210 mm). Not signed.

Condition: there is some age-toning to the paper.

Medium: screenprint (after the drawing). Printed in 1963 on a special semi-transparent paper in an edition of 450 for "Naissances" and published by Galerie Der Spiegel. Size: 11 3/4 x 8 1/4 inches (300 x 210 mm). Not signed.

Condition: there is some age-toning to the paper.

Medium: screenprint (after the drawing). Printed in 1963 on a special semi-transparent paper in an edition of 450 for "Naissances" and published by Galerie Der Spiegel. Size: 11 3/4 x 8 1/4 inches (300 x 210 mm). Not signed.

Condition: there is some age-toning to the paper.

Medium: screenprint (after the drawing). Printed in 1963 on a special semi-transparent paper in an edition of 450 for "Naissances" and published by Galerie Der Spiegel. Size: 11 3/4 x 8 1/4 inches (300 x 210 mm). Not signed.

Condition: there is some age-toning to the paper.

Medium: screenprint (after the drawing). Printed in 1963 on a special semi-transparent paper in an edition of 450 for "Naissances" and published by Galerie Der Spiegel. Size: 11 3/4 x 8 1/4 inches (300 x 210 mm). Not signed.

Condition: there is some age-toning to the paper.

Medium: screenprint (after the drawing). Printed in 1963 on a special semi-transparent paper in an edition of 450 for "Naissances" and published by Galerie Der Spiegel. Size: 11 3/4 x 8 1/4 inches (300 x 210 mm). Not signed.

Condition: there is some age-toning to the paper.

Medium: screenprint (after the drawing). Printed in 1963 on a special semi-transparent paper in an edition of 450 for "Naissances" and published by Galerie Der Spiegel. Size: 11 3/4 x 8 1/4 inches (300 x 210 mm). Not signed.

Condition: there is some age-toning to the paper.

Medium: screenprint (after the drawing). Printed in 1963 on a special semi-transparent paper in an edition of 450 for "Naissances" and published by Galerie Der Spiegel. Size: 11 3/4 x 8 1/4 inches (300 x 210 mm). Not signed.

Condition: there is some age-toning to the paper.

Medium: screenprint (after the drawing). Printed in 1963 on a special semi-transparent paper in an edition of 450 for "Naissances" and published by Galerie Der Spiegel. Size: 11 3/4 x 8 1/4 inches (300 x 210 mm). Not signed.

Condition: there is some age-toning to the paper.

Medium: screenprint (after the drawing). Printed in 1963 on a special semi-transparent paper in an edition of 450 for "Naissances" and published by Galerie Der Spiegel. Size: 11 3/4 x 8 1/4 inches (300 x 210 mm). Not signed.

Condition: there is some age-toning to the paper.

Medium: screenprint (after the drawing). Printed in 1963 on a special semi-transparent paper in an edition of 450 for "Naissances" and published by Galerie Der Spiegel. Size: 11 3/4 x 8 1/4 inches (300 x 210 mm). Not signed.

Condition: there is some age-toning to the paper.

Medium: screenprint (after the drawing). Printed in 1963 on a special semi-transparent paper in an edition of 450 for "Naissances" and published by Galerie Der Spiegel. Size: 11 3/4 x 8 1/4 inches (302 x 210 mm). Not signed.

Medium: screenprint (after the drawing). Printed in 1963 on a special semi-transparent paper in an edition of 450 for "Naissances" and published by Galerie Der Spiegel. Size: 11 3/4 x 8 1/4 inches (300 x 210 mm). Not signed.

Condition: there is some age-toning to the paper.