Walter Beckers, Seven colors 7 letters object, 1977

Kapellen (Belgium), Banana Press, 1977. Artist's multiple containing seven loose sheets of coloured cards, 21.5 x 10.5 cm.

Each features a single letter and number, the letters spelling the word RAINBOW. Seventh card printed with publication details. In near mint condition. Scarce, WorldCat locates two examples at the Tate and Getty.