Steve Bartlett said he unearth this hammered silver coin on the 2nd of February. Steve asked for a full ID and a valuation on his find.
The coin is a voided long cross penny of Henry III. On the reverse the legend reads GIL BER TON CAN, so Gilbert is the moneyer and Canterbury the mint.
This penny is an example of class 5 but I can’t be more specific due to weak areas on the obverse. The reverse is well struck and would grade nearly Fine; the obverse isn’t as good and this side would grade only Fair. In its present condition my price range on this Henry III penny would be £15-18.