What does 928 mean on silver pitcher?

The number "928" on a silver pitcher typically indicates the purity of the silver used in the piece. Specifically, it means that the silver is 92.8% pure, which is higher than the more common sterling silver standard of 92.5% purity. This mark can signify that the item is of higher quality than standard sterling silver. Always consider the context and additional markings for a complete understanding of the piece's origin and authenticity.