I have 6 pastry forks and one unknown fork in a presentation box. The unknow fork is 2 pronged and in a u shape.
The hallmarks are
a crown; capital letter E; capital letter P; a crown; letter NS in a box
(the capital letters look exactly as printed here)
I know that a crown is Sheffield but there is no assay mark on them. They could quite possibly be scandinavian or canadian due to family history.