A Stradivarius violin likely worth millions of dollars was turned in to a Swiss lost and found. The owner had loaned it to a musician friend who left it behind on a train in Bern. Train staff searched in vain for it, then spotted another passenger on surveillance cameras walking off with it, reports the Telegraph. The identity of the returner was not released. Only some 600 violins made by Italian master craftsman Antonio Stradivari still exist. One sold for close to $15 million at a charity auction last year. In 2008 a $4 million Stradivarius left by a musician in a New York taxi was returned by the cabbie.