ZERO Mack, Heinz Rotor. c. 1970. Colour silkscreen print on lightweight vellum board coated with aluminium foil. 24.2 x 19 cm (30 x 23 cm). Signed, numbered and inscribed with a dedication. - The margins show slight rubbing and slight yellowing, minimal surface scratches; the reverse bears small traces of former mounting. Overall in very good condition. Excellent print with margins. Colour silkscreen on lightweight wove cardboard laminated with aluminium foil. Signed, numbered and inscribed with a dedication. – The margins show minor rubbing and slight yellowing, minimal surface scratches; on the reverse, there are small traces of previous mounting. Overall in very good condition. Superb impression with margins.