Heinz KELLER (1928-2019) "Âges de la vie", xylographie en noir sur papier de riz, signée en bas à gauche et datée 1980, numérotée 9/50. H. 58.5 x 39 cm H. 58.5 x 58 cm H. 58.5 x 39 cm H. 58.5 x 58 cm Heinz Keller: graphic artist, lithographer, wood-engraver and painter. Born on 29.11.1928 in Winterthur, died there on November 29.9.2019. Training to be a graphic artist-lithographer. 1949 School Of Arts And Crafts Zörich, Professional-Class Graphics. Until 1962, the use of a graphic artist, then professional selfemployed vitality as a wood engraver and painter. 1961 Mitbegrönder of the magazine Xylon<