At Christie’s London on July 5 the portrait of  Peter Paul Rubens daughter Clara will be exposed for the final sale while  it’s being valued between $4 million and $6.8 million. £3m Round-Tripping Rubens Portrait at Christie’s https://t.co/BLzT8GeU5v pic.twitter.com/o1xMkCQmNQ — LiveArt (@artmarket) May 1, 2018 The Metropolitan Museum of Art (USA) set the painting for…