The deal to buy a Klimt painting for $135 million this week took much negotiating between a motivated buyer and a shrewd seller. And what about the other four Klimts owned by Maria Altman? “Experts have speculated that the four Klimts, sold together or individually, could bring as much as $150 million collectively. Then again, after all the attention paid to the ‘gold portrait,’ they might be seen by some status-minded collectors as a consolation prize.”