Bern, Kunsthalle Bern, 1969, 10,5x14,7 cm. (open 10,5x29,4 cm.), illustrated invitation card folded in two parts, with a photographic image toned in green, printed on the occasion of the exhibition (Bern, Kunsthalle Bern, 22 March - 27 April 1969). [Bibliography: Szeemann 1972: page (67); Tonini 2019: n. 145].
Bern, Kunsthalle Bern, 1969, 10,5x14,7 cm. (open 10,5x29,4 cm.), illustrated invitation card folded in two parts, with a photographic image toned in green, printed on the occasion of the exhibition (Bern, Kunsthalle Bern, 22 March - 27 April 1969). [Bibliography: Szeemann 1972: page (67); Tonini 2019: n. 145].
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