A rarely-seen Whistler portrait and a sculpture inspired by quantum physics: our pick of the September salesWhistler's portrait of Luke Ionides reflects a deep artistic friendship and has significant historical value, while Gormley's Quantum Cloud shows innovation in contemporary art.
Frieze New York diary: splashy showstoppers, steamy snapshots, and art that savesExhibition of burst paintings by Niki de Saint Phalle and Antony Gormley's stance on controversial statues at Frieze New York.
Antony Gormley donates art worth 500,000 to the UK Labour party ahead of general electionAntony Gormley donated art worth half a million pounds to the Labour party ahead of the UK general election.