Description | Includes the following:
Correspondence from the Royal Mint about the need for new Trial plate for Sheffield (the1892 Plate having nearly been used up). [From Standards Dept, not Johnson Matthey?], Mar/May 1902
Letter about new Trial Plate from Johnson Matthey – should be made of new silver-cadmium alloy (and extract from Mint Annual Report, 1902). More reliable, May 1903
Correspondence about new gold Trial Plates from Johnson Matthey, Oct – Dec 1903
Description transcribed from the Assay Office's finding aids for correspondence.
Sheffield Assay Office reference number: LE/5 Trial Plates |