Provenance:
By the present owner in 1987 directly acquired from the artist;
Significant Swiss property.

Certificate of authenticity: Signed and dated certificate of the artist, 2. July 1987.

Literature: see. Gottfried Honegger. Kunst als Bekenntnis, Werkübersicht 1939-2006.
Zürich/Bern, G. Honegger und Bentelli Verlag, 2006.
Pages 78, 84 (illustrations);
see. Michael Gnehm. Gottfried Honegger, Arbeiten im öffentlichen Raum.
Zurich, GTA Verlag, 2007.
No. 6 (illustrations);
see. Serge Lemoine. Gottfried Honegger, Catalogue des sculptures 1953-1983, Annexe: Architecture.
Paris/Zürich, Ed. Durand-Dessert/Waser Verlag, o.J.
No. 21 (illustrations), (2nd illustration in part "Projets").