The combination of anchor and lion symbols in silver marks represents specific assay offices and quality standards, particularly in British and European silversmithing traditions.
When found together, the anchor (Birmingham's mark) and lion passant (sterling silver standard) confirm both the location of assay and the quality of the silver.
Different combinations of these symbols may indicate various European assay offices or time periods, each with specific historical significance.
The style and arrangement of anchor and lion marks evolved over time, helping experts date pieces to specific periods and locations.