RARE 1767 Dublin Ireland Sterling Silver Double Scoop Bone Marrow Spoon

Description

This spoon is a double ended (1 small )  (1 larger ) scoops. It is my understanding that it is a rare Irish item. It is in very good condition and the standard British Isles Silver Smith stamp marks are very viewable.
The stamp marks are: (T-on a shield) for 1767 (Crowned Harp) Sterling Silver (Hibernia) Dublin Ireland. Makers mark (I - D).  I think it is for Isaac D'Olier II or III.
I am not an expert on these items, I have only researched it the best I could and found the information on different sites.  I do not claim that they are !00% accurate but they are close.
The Underside of the large spoon has Script initials that I believe are T.T.W.  This item has been in my wifes family for years but we do not know it's history.