Postby silvermakersmarks » Sat Sep 02, 2017 12:38 pm
This is a London hallmark, sufficiently distinctive despite the lack of the crowned leopard's head town mark. The date letter d is for 1819 and the maker, IH, is John Harris IV, a well-known spoon maker. He is known as John Harris IV because he is the fourth John Harris to be entered into the Goldsmiths' Company, not because of any blood relation to the previous three.
Phil