Photo of teen princess-to-be Diana set for auction

AMHERST, New Hampshire (AP) - A photo marked "not to be published" that shows a teenage Diana Spencer before she became the Princess of Wales, with a young friend seated beside her, will be featured in an auction this month in New Hampshire.

The photograph might never have been seen publicly until now, RR Auction said.

Stamped February 1981 on the back, the photo was taken around the time Charles, the Prince of Wales, and Lady Diana Spencer ended months of speculation and announced they were to be married.

The photo came from the Caren Archive, a major private collection of rare newspapers and other publications, and was purchased seven years ago from the Daily Mirror newspaper.