Stuart Lochhead, from the Reviewing Committee On The Export Of Works Of Art And Objects Of Cultural Interest, said: “Sculpture with Colour (Oval Form) Pale Blue and Red embodies the Cornish sky, sea and rugged coastline in which she lived and which influenced her so deeply.
“One of only a handful of stringed and coloured sculptures she produced during this period, it marks a significant evolution in her practice, bridging her pre-and post-war artistic developments.
“As such, this beautiful and immensely informative work by one of Britain’s greatest artists must be saved for the nation.”