British Platinum Hallmarks: How to Read and Recognize Them?
British platinum hallmarks are legally required stamps on platinum items over 0.5g sold in the UK, guaranteeing their purity, origin, and date. Platinum hallmarking became mandatory in 1975 in the UK with the first items officially stamped on January 2 of that year. The original mark was an orb and cross, though following the 1999 … Read more