Günter Fruhtrunk (1923 Munich - 1982 ibid.), 'Diagonale Progression in Gelb, Blau, Schwarz', 1968, Color silkscreen on cardboard. 64.4 x 72.0 cm. Glass frame., Provenance: From the estate of Walther Stürmer. Not de-framed. Glass with crack in the lower left corner.

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