Some of the most treasured instruments are hundreds of years old.  One of the most treasured is a violin handcrafted by Antonio Stradivari. On Friday – February 7 – Sotheby’s in New York is holding an auction of a 1714 “Joachim-Ma  Stradivarius.    Estimated at $12 to $18 million, the auction could be the most expensive…

Stradivarius Up for Auction