How much is a restored 320 year old stradivarius violin worth?

Stradivarius violins are among the most valuable in the world, with prices ranging from several hundred thousand dollars to over $20 million. The price of a restored 320 year old Stradivarius violin would depend on a number of factors, including its condition, provenance, and maker. Stradivarius violins have been known to sell for as much as $16 million in recent years.