Constant (1920-2005) _Moeder en kind III (Mother and Child III)_ signed and dated 'Constant '52' (centre left) ink on graph paper 61 x 88cm. Executed in 1952...

Constant (1920-2005) _Spatiovores_ signed, titled and dated 'Spatiovores Constant '61' (lower right), numbered '4' (lower centre) ink on paper 43.5 x 63cm. Executed in 1961...

Constant (1920-2005) _Gewonde Duif (Wounded Pigeon)_ signed and dated 'Constant Nieuwenhuys 1952' (on the reverse) watercolour, gouache and wax crayons on paper 48.5 x 49.5cm. Executed in 1952...

Constant (1920-2005) _Untitled_ (i) and (iii) signed and dated 'Constant '48' (lower left) (ii) signed and dated 'Constant '48' (lower right) (i) and (ii) ink on paper (iii) ink and tape on paper...

Constant (1920-2005) Madame signed and dated 'Constant '81' (lower right) watercolour on paper 59 x 44.5 cm. Executed in 1981...

Constant (1920-2005) Untitled signed and dated 'Constant '71' (lower right) watercolour on paper 36 x 45 cm. Executed in 1971...

Constant (1920-2005) Figuren in een landschap (figures in a landscape) signed and dated 'Constant '66' (lower right) pencil, watercolour, wax crayons and colour crayons on paper 77 x 114.5 cm. Ex...

Constant (1920-2005) Vrouw met hond signed and dated 'Constant 49' (lower centre) oil and pencil on canvas 45.5 x 74 cm. Painted in 1949...

Constant (1920-2005) Les geôliers signed 'Constant' (lower centre) wax crayons, ink and watercolour on paper 43.5 x 28.5 cm. Executed in 1985...

Constant (1920-2005) Le labyrinthe aux échelles - Ladderlabyrinth signed and dated 'Constant '71' (lower left); signed 'Constant' (on a patch on the reverse) oil on canvas 165 x 175 cm. Painted i...