It's an art world auction luring in big spenders. A collection expected to sell for an eyepopping $400 million. >> Someone's willing to pay for it, then it can be worth that much.>> At the centerpiece of the Sabbe sale, an iconic portrait of 20-year-old Elizabeth Letterer by Austrian painter Gustaf Climpmp could go for 150 million. >> It is so rare to find climps on the market. He had a very short life, and it is even rarer to find works of this quality.The artist's work inspiring fashion and major films. > ...