Old Wax Jack

I acquired this old wax jack recently. I did a lot of research and think this may be an original design from late 18th, early 19th Century based on an image I found online of one that was in much better condition. Looks like the original had a handle attached. I included a couple images that show a rough area at the base where it looks like the handle was broken off possibly? Seems to be made by Sheffield? Anyone else think this may be an original?