Xavier Bueno (Vera de Bidasoa 1915 - Fiesole 1979) “Untitled" c. 1972 oil and mixed media on canvas cm 20x25 Signed upper left Signed on the reverse Provenance Private collection, Milan This work is accompanied by a certificate of authenticity based on a photograph issued by the Xavier Bueno Archive, Fiesole, edited by Raffaele Bueno, no. XB 011/026