David Rauchfliesch told me that he unearthed this coin whilst detecting last weekend. He asked if I could let him have a full ID and a valuation on his find.
The coin is a London groat of Henry VII. On the obverse the king’s crown has one plain and one jewelled arch so the coin is an example of class IIIc, which is listed in the Standard Catalogue as number 2199. On both sides the stops are saltires and the mint mark is a greyhound’s head.
This groat would grade near VF, so I would price it at £150.