Koster A.L. Bulb fields, watercolour on paper 22,2 x 44,5 cm, signed l.r.> more information
Koster A.L. De tulipfields 'Leeuwenstein', Hillegom, oil on canvas 60 x 73,2 cm, signed l.r.> more information
Koster A.L. Tulipsand fruit trees in bloom, oil on canvas 32,6 x 43,4 cm, signed l.r.> more information