This hammered silver coin measures only 12mm in diameter but is shown greatly enlarged. It was found by Damon Ward and I was asked to provide further details.
On the obverse the legend reads +EDWARDVS REX A around the head of the king, who on this coin has pellet eyes and his crown has wedge-shaped petals on the central fleur de lis. On the reverse the legend reads CIVI TAS LON DON. Therefore this is a London farthing of Edward II or Edward III.
In the Standard Catalogue the coin is listed twice, first as number 1474 and then again as number 1538. This is because the striking of farthings of this type straddled the reigns of Edward II and Edward III.
This coin is much scarcer than the fairly common class 10 farthings of Edward I. Damon’s find is a well struck specimen and would grade good Fine, so the price range to a collector wouldn’t be any lower than £50 – £60.