A Frans Post Painting Found in a Barn Sold for $7.37M at Auction

A grimy old painting recovered from an attic or a barn that turns out to be priceless: Fans of Antiques Roadshow will recognize the thrilling trope but also appreciate just how rare an occurrence it actually is.

In 1998 George Wachter, chairman and co-worldwide head of Old Master paintings at Sotheby’s, heard about a painting that had been pulled out of, well, a barn attic. “It was filthy, black, dirty,” Wachter tells Robb Report. “You could hardly see it.”

In…