KLEE, PAUL (Münchenbuchsee/Bern 1879 - 1940 Muralto) Vier Türme. 1923, 100. (four towers) Watercolour and pencil on paper, mounted by the artist on board. Margin strips above and below in watercolour and pen on board. Signed lower right: Klee. Dated, numbered and entitled centre bottom in the margin strip: 1923. 100. Vier Türme. 26 x 32 cm. Provenance: In the same Swiss family collection since the beginning of the 1930s Exhibited: Die Maler am Bauhaus, Haus der Kunst, Munich, May - June 1950, No. 159. Literature : Paul Klee - Catalogue raisonné, vol. 4, 1923-1926, pub by Paul-Klee foundation, Kunstmuseum Bern, Bern 2000, No. 3194. Expertise: Zentrum Paul Klee, Bern, Contract number. 0711/1, 29. October 2007.