Though initially limited to the higher ranks of the church and state, the use of seals became more general from the 11th century onward and by the end of the thirteenth century tradesmen and peasants also used them.

Medieval seal matrices are usually made from copper-alloy or lead, but silver examples are not unknown.  This seal includes a re-used Roman intaglio as the central design.

It was found by a metal detectorist in Markington in 2015

The matrix itself is of 13th – 14th century date while the Roman insert dates from the second to third centuries AD.

Source:-

https://finds.org.uk/counties/yorkshire/find-in-focus-medieval-seal-matrix/