Finally got this one in after some delay. I haven't had time to research it yet, but will get there soon. William Jackson, Philadelphia near Sheffield. I *think* it is VR stamped, but looking at the top left of the V, it could be a WR that missed the surface, though the blade shape I think suggests later. It is in great condition, and the etching is wonderful.
Attachment 180462
Attachment 180463
Attachment 180464
Attachment 180465