This is the second coin from a group of three that came in from John Lashmar. It looks massive but the images are greatly enlarged shots of a hammered silver farthing measuring only 10mm in diameter.
John’s find is a class 10 London farthing, which was struck late in the reign of Edward I. This is another coin that used to be scarce but is now fairly common. I’d guess that today the number known will be at least ten times greater than 40 years since.
Farthings of this type are listed as number 1450 in the Standard Catalogue. The example pictured here would grade Fair to Fine, so my highest price range would be £15 – £18.