BOSTON (CBS) – A New Hampshire auction house will put a previously unseen press photo of a teenaged Princess Diana up for bid.

The black and white image shows Diana smiling as she lies in the lap of a young man reading a book. The words ?not to be published? were written on the photo.

The picture is dated February 26, 1981, two days after Buckingham Palace announced the royal engagement.

A London tabloid originally deemed the picture too hot to publish.

The auction will begin on January 17th, and runs through January 24th. More information is available at RR Auction.