Eric Knowles visits Birmingham Assay Office to discover how hallmarking works in the 21st century. The red and blue teams are on the hunt for profits in Long Marston with help from experts Charles Hanson and Nick Hall.
Eric Knowles visits Birmingham Assay Office to discover how hallmarking works in the 21st century. The red and blue teams are on the hunt for profits in Long Marston with help from experts Charles Hanson and Nick Hall.