HENRY LAMB, R.A. (1883-1960) Portrait of Rosaline Pollock signed and dated 'Lamb 39' (upper right) oil on canvas 50.8 x 61 cm (20 x 24 in.)  Provenance: Sale, Phillips, London, 12 September 1989, lot 78, where purchased by the present owner Artist's Resale Right may apply on this lot