A centuries-old sketch of a bearded man has been identified as Leonardo da Vinci.
The picture, which is held in the Royal Collection in the UK, is thought to have been drawn just before the renaissance man's death 500 years ago this year.
That would make it only the second surviving portrait of da Vinci that was made during his lifetime.
It will now go on display at the Queen's Gallery at Buckingham Palace.

Fire in rebel-held east Congo kills 24 schoolchildren
Trump touts $5,000 payout if Republicans win as Vance waits in wings
Search expands after Philippine ferry fire kills five and leaves dozens missing
Trump says Iran war to end after US midterm elections
At least 20 killed in cargo vessel fire at China shipyard, state media reports
US military says it struck vessel in Caribbean, killing 3
At least 14 killed in explosion at weapons depot in Syria
US hits five Iranian oil tankers after attack on Navy ships
