Markings on precious metals indicate purity levels and are essential for understanding the value and composition of gold and silver items.
Common silver markings include 925 (sterling silver - 92.5% pure), 999 (fine silver - 99.9% pure), 800 (80% pure), and 950 (95% pure). These numbers represent parts per thousand.
Gold markings include 375 (9ct), 585 (14ct), 750 (18ct), 916 (22ct), and 999 (24ct). Understanding these numbers helps determine both purity and value.
Different countries may use varying standards and number systems. European marks often use three-digit numbers, while American pieces might use alternative marking systems.