J.C.J. VAN DER HEYDEN (1928-2012) UNTITLED 1960 signed and dated ’60- oil, gouache and collage on paper 18×26 cm
J.C.J. VAN DER HEYDEN (1928-2012) UNTITLED (1979) signed and dated 1979 verso- oil on canvas laid down on panel 9x25x1.8 cm
