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The violin trade has long depended on a small number of master craftsmen whose instruments can —sellsalesellingsold for millions of dollars at auction. Violins made in eighteenth-century Cremona are especially prized, and experts still debate what gives them their —distinctivedistinctdistinctlydistinction tone. Because forgeries are common, buyers typically —verifyverificationverifyingverified an instrument's authenticity through detailed scientific analysis before completing a purchase.