Is dated 1949 in Constant's archives however the date of origin for this work varies amongst different sources.
Work
Pages

photo: Tom Haartsen

photo: Tom Haartsen

photo: Tom Haartsen

photo: Tom Haartsen

photo: Tom Haartsen
Dieren
1948
42.7cm x 32.6cm
gouache, paper, pencil, watercolor
Collection Stedelijk Museum Amsterdam, NL

photo: Tom Haartsen

photo: Tom Haartsen

photo: Tom Haartsen

photo: Tom Haartsen
Vogel en driehoek
1948
42.8cm x 32.7cm
paper, pencil, watercolor
Collection Stedelijk Museum Amsterdam, NL

photo: Tom Haartsen