François Kollar (1904 - 1979) Fernande Kollar, c. 1955. Color slide film, on a silver leaf background, in its original mount. Unique piece. 24 x 18 cmFrançois Kollar trained in color after the war (Agfacolor, Ferraniacolor, Telcolor...) and developed personal, technical and aesthetic research in the 1950s. François Kollar (1904-1979) Fernande Kollar, c. 1955 . Color slide film, on a silver leaf background, in its original mount. Unique piece. 24 x 18 cm