A small art gallery has produced another scoop with previously unpublished pictures of Princess Diana.

The Meller Gallery, in Witney, is hoping for the same sensation it aroused 15 months ago when it unveiled unseen photograhs of screen icon Marilyn Monroe.

Owner Aidan Meller has secured the rights to three photographs of the late princess and is selling them in limited editions of 195 copies.

They became an instant talking point when they were unveiled in the Church Green gallery.

Mr Meller, a former art teacher at the town's Henry Box School, said: "We've secured the exclusive rights to publish them, and I've no doubt they will be snapped up just like the Marilyn ones."

The three photographs date back to the 1980s and early 1990s. One of them, taken in 1986, shows the Princess with her second son, Prince Harry, when he was still a toddler on holiday in Majorca.

Another shows her glancing back through a doorway and in the third, she is seen pushing back her hair while caught in the rain at a Pavarotti concert in London's Hyde Park.

The original shots were taken by professional photographers Glenn Harvey and the Sipa Agency.

Mr Meller, who is also the founder of Christian art organisation Veritasse, added that he had always been a big fan of the Princess, who died in August 1997.

"The exhibition comes on the 10th anniversary of her death and shows what a beautiful, beautiful lady she was," he said.

"I'm delighted that we can show these pictures to the public, given all the recent fuss over her death in the inquest.

"It is nice to remember that she did a lot of good when she was alive.

"The photo of Harry is particularly poignant in the light of his recent return from the frontline in Afghanistan, now a courageous soldier and fully grown son for any mother to be proud of."

The gallery opened in late 2006 and within a month, had secured priceless publicity when it displayed eight photographs of Marilyn Monroe.

The previously unseen images were taken by world-renowned photographer Eve Arnold.

The gallery was swamped with requests for the pictures from all over the world, was featured in the New York Post and fielded press calls from Russia, India, Italy and Switzerland.

Mr Meller is selling the prints for £295 each