A painting hanging in a British stately home has been confirmed as a self-portrait by Rembrandt worth tens of millions of dollars, the National Trust heritage body announced on Friday.
The picture, which has been at Buckland Abbey in Devon, southwest England, since it was donated to the trust in 2010, was thought for decades to be a portrait by one of the Dutch Master's pupils.
But the world's leading Rembrandt expert has now re-attributed it to the 17th-century master himself.
It has been given a new value of £20 million -- though the National Trust said it can never be sold as the organization holds items on behalf of the nation forever.
"These latest investigations are incredibly exciting and important," said David Taylor, the trust's curator of paintings and sculpture.
"Conservation work and technical analysis being undertaken over the winter will give us further confirmation regarding the picture's authorship."
The self-portrait, dated 1635, shows the artist aged 29 wearing a cap with large white ostrich feathers.