Unseen Photo of Princess Diana Up For Auction

This photo of a young Diana Spencer - soon before becoming Princess Diana - is to go under the hammer at an upcoming U.S. auction. The candid snap shows the princess-to-be smiling for the camera alongside an unidentified young man. The photo originally came from the library of Britain's Daily Mirror tabloid newspaper. Scrawled onto the photograph itself the are the words "Not to be published"