ZERO Geiger, Rupprecht Red Circle on Yellow / Bright Red Cold on Yellow. 1968. Colour silkscreen print on lightweight Velin card. 24 x 22 cm (26.2 x 24 cm). Signed and numbered. - Due to the nature of the paper, there is minimal browning and faint brown spotting. Traces of previous mounting on the reverse in the upper margin. Overall in good condition. An excellent, vibrantly coloured print with a narrow margin. WVG 115 – One of 150 copies. – Published by Galerie Wilbrand, Cologne. Colour serigraph on light wove card. Signed and numbered. – With light browning due to the paper and slight foxing; on the reverse, in the upper margin, there are traces of previous mounting. Good overall. Superb impression in luminous colours with narrow margins. – One of 150 copies. – Published by Wilbrand Gallery, Cologne.