Silver futures on Comex topped $60 an ounce on Dec. 9 for the first time on record. - Getty Images/iStockphoto Silver prices have been on an epic run lately. But after notching multiple record highs in quick succession, strategists told MarketWatch that the metal’s rally could be facing its first true test — with the$60-an-ounce mark widely seen as a make-or-break level. And if silver manages to hold on, investors could see even bigger gains in the short term. Most Read from MarketWatch On Tuesday, si ...