Can silver be stamped 586

Yes, silver can be stamped with "586," which indicates that it is 58.6% pure silver. This stamp is commonly associated with certain types of silver alloys, particularly in countries that use a decimal system for purity. However, the more widely recognized silver purity marks are "925" for sterling silver (92.5% pure) and "999" for fine silver (99.9% pure). Always verify the authenticity of the stamp with a reputable source or expert.