UK hallmark date letters: letter to year
Look up a stamp
Type the letters and numbers as they appear, or a UK date letter with its office, for example k London.
Cycle tables by office
Until 1974 the letter changes once a year in a month that depends on the office: London in May, Birmingham in July, Sheffield in July, Edinburgh in September, Chester in July, Glasgow in July. Since 1975 all offices share one cycle and the year changes on 1 January.
Sources
- Silver Makers' Marks, date-letter tables by assay office
- The Goldsmiths' Company Assay Office, History of hallmarking
- Assay Office Birmingham, timeline
- Sheffield Assay Office, history
All sources are listed with the method on the sources page.