A rare 1679 violin made by renowned Italian craftsman Antonio Stradivari is heading for auction next month where it could fetch up to £9 million ($11.3m).
Violinist Braimah Kanneh-Mason played the instrument at a preview and described it as "beautiful".
"These kinds of violins are often compared to sports cars, you have to firstly learn how to drive them, but once you learn how to manoeuvre it’s incredibly rewarding," he said.
The Hellier Stradivarius "is the finest inlaid violin ever made by ... Stradivari and one of the finest Stradivarius instruments in existence", said auction house Christie's, which is offering the instrument as the top lot in "The Exceptional Sale" at July 7.
Engraved with ivory and diamonds and finished with a golden varnish, the violin has an estimated price of £6m-£9m.
Stradivari kept the instrument for 55 years, selling it in 1734 for £40 to Samuel Hellier of Wombourne, England.
"I expect a lot of interest for such an instrument because it is so rare that it comes out of a museum," violin expert and Christie's consultant Florian Leonhard told Reuters.
"When can you touch a violin like this and own it? It’s incredible."
Stradivari's violins are known for their exquisite craftsmanship and can cost up to £16m, Mr Leonhard said.
Christie's said: "Of the roughly 1,100 instruments Stradivari made over the course of his career, only around a dozen are embellished with decoration and this specimen is regarded by the Smithsonian curators as the best-preserved extant example."