Postby dognose » Wed Apr 10, 2013 6:27 am
Hi Fred,
I guess that was a typo for 1750 or 1776?
In 1968, Kurt Ticher, Ida Delamer and William O'Sullivan wrote a booklet for the National Museum of Ireland, 'Hallmarks on Dublin Silver 1730-1772'. It was a work that details the finer points of the Hibernia and Crowned Harp marks. I've just spent some time going though it, and to my eyes, neither of those marks match up to as they should be for 1750.
That leaves the possibility of 1776. The 'D' date letter, according to Jackson, has been noted with and without the pellet at the base of the letter. Jackson's contains photographic images of the marks for that year, and again, the finer points do not match up, however, they do only show one set and there is the possibility, as in earlier years, that other variations may have been used.
The maker's mark, if indeed that is what it is supposed to represent, is unknown to me. You could try sending an image to the Dublin Assay Office for their opinion.
Hopefully other members of the forum will add their thoughts.
Trev.