For the first time, a work by the mysterious US artist Nat Tate is to go on sale at auction house Sotheby's in London.
James Naughtie met Nat Tate's biographer William Boyd and Sotheby's Frances Christie to see if he could find out more about the elusive New York artist.
Bridge No.114 by Nat Tate, up for auction at Sotheby's
Get in touch with Today via
or text us on 84844.