Gold plated silver hallmarks indicate items made of silver base metal with gold plating, requiring specific identification techniques and understanding of dual-metal marking.
Silver-gilt or gold plated silver items may show both silver hallmarks (for the base metal) and additional marks indicating gold plating.
Marks may indicate the thickness or quality of gold plating, with terms like 'gilt,' 'gold filled,' or specific micron measurements.
Traditional fire gilding and modern electroplating techniques may be indicated by different marking systems, reflecting technological advances.