A valuable violin with a storied past will be sold at Sotheby’s in February—and it could become the most expensive musical instrument ever auctioned. Known as the Joachim-Ma Stradivarius ...

Sotheby's has been consigned by the New England Conservatory (NEC) to auction the Joachim-Ma Stradivarius violin with an estimate of $12 million to $15 million. The working instrument was crafted ...