Pennyweight.

Chester hallmark date letter “I”: which year?

Short answer

The letter I on a Chester hallmark can be any of these years, depending on its case and typeface: 1847–1848 (uppercase gothic); 1872–1873 (lowercase gothic); 1892–1893 (uppercase roman); 1909–1910 (uppercase cursive).

Before 1975 the letter changes in July, so most letters span two calendar years. Compare the case and typeface with the table; the letter alone does not settle it.

Candidates for I at Chester

YearsLetter styleCycleNote
1847–1848uppercase gothicChester cycle
1872–1873lowercase gothicChester cycle
1892–1893uppercase romanChester cycle
1909–1910uppercase cursiveChester cycleThe letter often appears lying on its side.

Narrowing it down

Other marks and features on the piece can rule candidates out: see dating jewelry by construction features and the other UK hallmarks.

The letter I at other offices: London, Birmingham, Sheffield, Edinburgh, Glasgow.

All Chester cycles

Frequently asked

What year is the letter I on a Chester hallmark?

It depends on the shape of the letter: 1847–1848 (uppercase gothic); 1872–1873 (lowercase gothic); 1892–1893 (uppercase roman); 1909–1910 (uppercase cursive).

Sources

All sources are listed with the method on the sources page.