Seamstresses; Dokie van Amstel, Lucie Kuijken and Thérèse Joachimsthal, oil on canvas 1937, signed. 114 x 130 cm
The Netherlands, Laren ± 1942, signed
England, Graveyard, 1946, unsigned
Oil on scorched wooden door panel. 1972, signed.
'Reflections' with Carol Factor, triptych,1973, signed
'The Progression of a Calamity'. Part 1 triptych, 1980, signed. Oil on canvas
'The Progression of a Calamity'. 'Calamity at Bus Stop'. Part 2 triptych. 1980, signed. Oil on canvas
'The Progression of a Calamity'. 'Incident'. Part 3 triptych. 1980, signed. Oil on canvas
Koert was inspired by old newspaper and magazine clippings for this painting in which, among others, Ome Ko, a fishmonger from Amsterdam, can be seen. 1981, signed. Oil on canvas