GÜNTER FRUHTRUNK (MONACO 1923 - 1982) "Energie-Zentrum" 1963-1964 acrylic and casein on hardboard 56.5x60 cm Signed, titled, and dated 63/64 on the reverse Provenance Galleria Lorenzelli, Milan Vismara Arte Gallery, Voghera Private collection, Voghera Literature E. Gomringer, M. Imdahl, G. Sterner "Günter Fruhtrunk Werkverzeichnis 1978" Starnberg 1978, no. 148, ex 1 K. Wendt “Günter Fruhtrunk Monographie und Werkverzeichnis†Frankfurt am Main, Peter Lang, 2001, no. 1963/64-01 (with incorrect technique) S. Reiter, Günter Fruhtrunk Gesellschaft München “Werkverzeichnis der Bilder/Catalogue Raisonné of the Paintings 1952-1982,†Berlin, Günter Fruhtrunk Gesellschaft, 2018, p. 249, no. 316 (with incorrect measurements)