Watch List notes:

Great Britain. Groat, Nd. S.1727. Henry IV, 1399-1413. Light coinage, 1412-13. 3.7 grams. Mint mark, cross pattee. London. Pellet to left. 10 arches to tressure. Very Rare. Very Fine. Estimate Value $9,000 - 10,000
Officially recorded as part of the Eye hoard in Suffolk found 2010 with a total of 477 coins that were returned to the finders, here is the link (https://finds.org.uk/database/artefacts/record/id/390506).